Pocket Watch Database
Patent Archive
#3216188
Patent Information
Timepiece Circular Tune Fork
Masakazu Hirose
Koichi Iwaki
November 9, 1965
Patent #3216188
| Patent Number: | 3216188 |
| Description: | Timepiece Circular Tune Fork |
| Inventor(s): |
Masakazu Hirose Koichi Iwaki |
| Assignee: | Jeco Co Ltd |
| Patent Date: | Nov 9, 1965 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
