Pocket Watch Database
Patent Archive
#3433011
Patent Information
Watch Main Spring
Hiroshi Iwasawa
Hajime Isekil
March 18, 1969
Patent #3433011
| Patent Number: | 3433011 |
| Description: | Watch Main Spring |
| Inventor(s): |
Hiroshi Iwasawa Hajime Isekil |
| Assignee: | Citizen Tokei Kabushiki Kaisha |
| Patent Date: | Mar 18, 1969 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
