Pocket Watch Database
Patent Archive
#1920838
Patent Information
Clock Secondary Dial
Leonard C. Butts
August 1, 1933
Patent #1920838
| Patent Number: | 1920838 |
| Description: | Clock Secondary Dial |
| Inventor(s): | Leonard C. Butts |
| Patent Date: | Aug 1, 1933 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
