Pocket Watch Database
Patent Archive
#139678
Patent Information
Watch Spring Aluminum
Ferd Adolph Lange
June 10, 1873
Patent #139678
| Patent Number: | 139678 |
| Description: | Watch Spring Aluminum |
| Inventor(s): | Ferd Adolph Lange |
| Patent Date: | Jun 10, 1873 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
