Pocket Watch Database
Patent Archive
#447409
Patent Information
Lock Electric Time
Joseph H. Kaiser
Andrew B. Ledwith
March 3, 1891
Patent #447409
| Patent Number: | 447409 |
| Description: | Lock Electric Time |
| Inventor(s): |
Joseph H. Kaiser Andrew B. Ledwith |
| Patent Date: | Mar 3, 1891 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
