Pocket Watch Database
Patent Archive
#121782
Patent Information
Time Lock
Stephen W. Hollen,
December 12, 1871
Patent #121782
| Patent Number: | 121782 |
| Description: | Time Lock |
| Inventor(s): | Stephen W. Hollen, |
| Patent Date: | Dec 12, 1871 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
