Pocket Watch Database
Patent Archive
#1931251
Patent Information
Clock Watch Torsion Spring Etc
Thomas H. Chamberlain
October 17, 1933
Patent #1931251
| Patent Number: | 1931251 |
| Description: | Clock Watch Torsion Spring Etc |
| Inventor(s): | Thomas H. Chamberlain |
| Assignee: | New Haven Clock Co |
| Patent Date: | Oct 17, 1933 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
