Pocket Watch Database
Patent Archive
#2679135
Patent Information
Chronograph
Wilhelm Julius Hannhart
May 25, 1954
Patent #2679135
| Patent Number: | 2679135 |
| Description: | Chronograph |
| Inventor(s): | Wilhelm Julius Hannhart |
| Patent Date: | May 25, 1954 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
