Pocket Watch Database
Patent Archive
#2977751
Patent Information
Balance Wheel Lock
Ralph H. Jr Thrasher
April 4, 1961
Patent #2977751
| Patent Number: | 2977751 |
| Description: | Balance Wheel Lock |
| Inventor(s): | Ralph H. Jr Thrasher |
| Patent Date: | Apr 4, 1961 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
