Pocket Watch Database
Patent Archive
#1715521
Patent Information
Clock Four Hundred Day
George T. Summers
June 4, 1929
Patent #1715521
| Patent Number: | 1715521 |
| Description: | Clock Four Hundred Day |
| Inventor(s): | George T. Summers |
| Patent Date: | Jun 4, 1929 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
