Pocket Watch Database
Patent Archive
#429699
Patent Information
Watch Balance Apparatus Test
William D. Olney
June 10, 1890
Patent #429699
| Patent Number: | 429699 |
| Description: | Watch Balance Apparatus Test |
| Inventor(s): | William D. Olney |
| Patent Date: | Jun 10, 1890 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
