Pocket Watch Database
Patent Archive
#511150
Patent Information
Watch Case Spring
Friedrich Emil Lange
December 19, 1893
Patent #511150
| Patent Number: | 511150 |
| Description: | Watch Case Spring |
| Inventor(s): | Friedrich Emil Lange |
| Patent Date: | Dec 19, 1893 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
