Pocket Watch Database
Patent Archive
#218613
Patent Information
Watch Wind Device
William H. Zinn
Major D. Porter
August 12, 1879
Patent #218613
| Patent Number: | 218613 |
| Description: | Watch Wind Device |
| Inventor(s): |
William H. Zinn Major D. Porter |
| Patent Date: | Aug 12, 1879 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
