Pocket Watch Database
Patent Archive
#991717
Patent Information
Clock Pendulum Rotary
Claude Grivolas
May 9, 1911
Patent #991717
| Patent Number: | 991717 |
| Description: | Clock Pendulum Rotary |
| Inventor(s): | Claude Grivolas |
| Patent Date: | May 9, 1911 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
