E. Howard Watch Co. (Keystone)
Pocket Watch Patents
The following gallery contains patents that were issued or assigned to E. Howard Watch Co. (Keystone) or individuals known to be associated with the company at the time. Not all designs were fully implemented into production.
Watch Stem Wind & Set
| Patent Number: |
781263 |
| Description: |
Watch Stem Wind & Set |
| Inventor: |
Anderson Olof
|
| Patent Date: |
Jan 31, 1905 |
| Registration Type: |
Patent |
Watch Balance
| Patent Number: |
788399 |
| Description: |
Watch Balance |
| Inventor: |
Freund Joseph Alexander
|
| Patent Date: |
Apr 25, 1905 |
| Registration Type: |
Patent |
Watch Stem Wind Mech
| Patent Number: |
796162 |
| Description: |
Watch Stem Wind Mech |
| Inventor: |
Taft Ryland L
|
| Assignee: |
E Howard Watch Co |
| Patent Date: |
Aug 1, 1905 |
| Registration Type: |
Patent |
Watch Barrel
| Patent Number: |
886387 |
| Description: |
Watch Barrel |
| Inventor: |
Mehl Walter B
|
| Assignee: |
Howard Watch Co |
| Patent Date: |
May 5, 1908 |
| Registration Type: |
Patent |
Machine Staff Lathe
| Patent Number: |
889386 |
| Description: |
Machine Staff Lathe |
| Inventor: |
Mehl Walter B
|
| Assignee: |
E Howard Watch Co |
| Patent Date: |
Jun 2, 1908 |
| Registration Type: |
Patent |
Watch Movement
| Patent Number: |
900183 |
| Description: |
Watch Movement |
| Inventor: |
Mehl Walter B
|
| Assignee: |
E Howard Watch Co |
| Patent Date: |
Oct 6, 1908 |
| Registration Type: |
Patent |
Watch Case
| Patent Number: |
922013 |
| Description: |
Watch Case |
| Inventor: |
Mehl Walter B
|
| Assignee: |
E Howard Watch Co |
| Patent Date: |
May 18, 1909 |
| Registration Type: |
Patent |
Watch Stem Wind & Set
| Patent Number: |
946906 |
| Description: |
Watch Stem Wind & Set |
| Inventor: |
Ebelhare William B
Mehl Walter B
|
| Assignee: |
Philadelphia Watch Case Co |
| Patent Date: |
Jan 18, 1910 |
| Registration Type: |
Patent |
Watch Movement Click
| Patent Number: |
951106 |
| Description: |
Watch Movement Click |
| Inventor: |
Ebelhare William Henry
|
| Assignee: |
Philadelphia Watch Case Co |
| Patent Date: |
Mar 8, 1910 |
| Registration Type: |
Patent |
Watch Movement Ratchet Mech
| Patent Number: |
971496 |
| Description: |
Watch Movement Ratchet Mech |
| Inventor: |
Ebelhare William Henry
|
| Assignee: |
Keystone Watch Case Co |
| Patent Date: |
Sep 27, 1910 |
| Registration Type: |
Patent |
Watch Movement Ratchet Mech
| Patent Number: |
971500 |
| Description: |
Watch Movement Ratchet Mech |
| Inventor: |
Groff Howard Metzler
|
| Assignee: |
Keystone Watch Case Co |
| Patent Date: |
Sep 27, 1910 |
| Registration Type: |
Patent |
Watch Movement Ratchet Mech
| Patent Number: |
977286 |
| Description: |
Watch Movement Ratchet Mech |
| Inventor: |
Ebelhare William Henry
|
| Assignee: |
Keystone Watch Case Co |
| Patent Date: |
Nov 29, 1910 |
| Registration Type: |
Patent |
Watch Movement
| Patent Number: |
977320 |
| Description: |
Watch Movement |
| Inventor: |
Mehl Walter B
|
| Assignee: |
Keystone Watch Case Co |
| Patent Date: |
Nov 29, 1910 |
| Registration Type: |
Patent |
Watch Movement
| Patent Number: |
977321 |
| Description: |
Watch Movement |
| Inventor: |
Mehl Walter B
|
| Assignee: |
Keystone Watch Case Co |
| Patent Date: |
Nov 29, 1910 |
| Registration Type: |
Patent |
Watch Movement End Stone Cap
| Patent Number: |
978612 |
| Description: |
Watch Movement End Stone Cap |
| Inventor: |
Mehl Walter B
|
| Assignee: |
Keystone Watch Case Co |
| Patent Date: |
Dec 13, 1910 |
| Registration Type: |
Patent |
Watch Barrel
| Patent Number: |
978613 |
| Description: |
Watch Barrel |
| Inventor: |
Mehl Walter Bird
|
| Assignee: |
Keystone Watch Case Co |
| Patent Date: |
Dec 13, 1910 |
| Registration Type: |
Patent |
Watch Movement Pallet End Stone Cap
| Patent Number: |
981667 |
| Description: |
Watch Movement Pallet End Stone Cap |
| Inventor: |
Mehl Walter B
|
| Assignee: |
Keystone Watch Case Co |
| Patent Date: |
Jan 17, 1911 |
| Registration Type: |
Patent |
Watch Wind Indicator
| Patent Number: |
992118 |
| Description: |
Watch Wind Indicator |
| Inventor: |
Ebelhare William Henry
|
| Assignee: |
Keystone Watch Case Co |
| Patent Date: |
May 9, 1911 |
| Registration Type: |
Patent |
Watch Stem Wind & Set
| Patent Number: |
1013896 |
| Description: |
Watch Stem Wind & Set |
| Inventor: |
Perry Earle Sloan
|
| Assignee: |
Keystone Watch Case Co |
| Patent Date: |
Jan 9, 1912 |
| Registration Type: |
Patent |
Watch Bridge Plate -Edward Howard-
| Patent Number: |
D42574 |
| Description: |
Watch Bridge Plate -Edward Howard- |
| Inventor: |
Freund Joseph A
Ebelhare William H
|
| Assignee: |
Keystone Watch Case Co |
| Patent Date: |
Jun 4, 1912 |
| Registration Type: |
Patent |
Watch Stem Wind & Set
| Patent Number: |
1029116 |
| Description: |
Watch Stem Wind & Set |
| Inventor: |
Freund Joseph A
|
| Assignee: |
Keystone Watch Case Co |
| Patent Date: |
Jun 11, 1912 |
| Registration Type: |
Patent |
Watch Movement
| Patent Number: |
1041335 |
| Description: |
Watch Movement |
| Inventor: |
Nutting Granville
|
| Assignee: |
Keystone Watch Case Co |
| Patent Date: |
Oct 15, 1912 |
| Registration Type: |
Patent |
Banking Pin
| Patent Number: |
1062645 |
| Description: |
Banking Pin |
| Inventor: |
Freund Joseph A
|
| Assignee: |
Keystone Watch Case Co |
| Patent Date: |
May 27, 1913 |
| Registration Type: |
Patent |
Watch Movement
| Patent Number: |
1063251 |
| Description: |
Watch Movement |
| Inventor: |
Freund Joseph A
|
| Assignee: |
Keystone Watch Case Co |
| Patent Date: |
Jun 3, 1913 |
| Registration Type: |
Patent |
Watch Movement
| Patent Number: |
1084215 |
| Description: |
Watch Movement |
| Inventor: |
Lundvall Erik A
|
| Assignee: |
Keystone Watch Case Co |
| Patent Date: |
Jan 13, 1914 |
| Registration Type: |
Patent |
Watch Display Box
| Patent Number: |
1346591 |
| Description: |
Watch Display Box |
| Inventor: |
Cook Wilbur C
|
| Assignee: |
Keystone Watch Case Co |
| Patent Date: |
Jul 13, 1920 |
| Registration Type: |
Patent |
Device Stem Wind & Set
| Patent Number: |
1378408 |
| Description: |
Device Stem Wind & Set |
| Inventor: |
Freund Joseph A
|
| Assignee: |
Keystone Watch Case Co |
| Patent Date: |
May 17, 1921 |
| Registration Type: |
Patent |
Watch Thin Movement
| Patent Number: |
1392006 |
| Description: |
Watch Thin Movement |
| Inventor: |
Freund Joseph A
|
| Patent Date: |
Sep 27, 1921 |
| Registration Type: |
Patent |
Watch Plate Mfg
| Patent Number: |
1392007 |
| Description: |
Watch Plate Mfg |
| Inventor: |
Freund Joseph A
|
| Patent Date: |
Sep 27, 1921 |
| Registration Type: |
Patent |
Watch Wind Mech
| Patent Number: |
1467427 |
| Description: |
Watch Wind Mech |
| Inventor: |
Freund Joseph A
|
| Assignee: |
Keystone Watch Case Co |
| Patent Date: |
Sep 11, 1923 |
| Registration Type: |
Patent |
Watch Wind Device
| Patent Number: |
1499609 |
| Description: |
Watch Wind Device |
| Inventor: |
Freund Joseph A
|
| Assignee: |
Keystone Watch Case Co |
| Patent Date: |
Jul 1, 1924 |
| Registration Type: |
Patent |
