Pocket Watch Database
Patent Archive
#3521442
Patent Information
Clock Electric Wind Switch
Tosio Umezawa
July 21, 1970
Patent #3521442
| Patent Number: | 3521442 |
| Description: | Clock Electric Wind Switch |
| Inventor(s): | Tosio Umezawa |
| Assignee: | Jeco Co Ltd |
| Patent Date: | Jul 21, 1970 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
