Pocket Watch Database
Patent Archive
#520879
Patent Information
Time Ball
William F. Gardner
June 5, 1894
Patent #520879
| Patent Number: | 520879 |
| Description: | Time Ball |
| Inventor(s): | William F. Gardner |
| Patent Date: | Jun 5, 1894 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
