Pocket Watch Database
Patent Archive
#488240
Patent Information
Machine Jewel Set
Duane H. Church
December 20, 1892
Patent #488240
| Manufacturer: | Waltham |
| Patent Number: | 488240 |
| Description: | Machine Jewel Set |
| Inventor(s): | Duane H. Church |
| Patent Date: | Dec 20, 1892 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
