Pocket Watch Database
Patent Archive
#1907282
Patent Information
Means To Control Sound Of Alarm
John Waldheim
May 2, 1933
Patent #1907282
| Patent Number: | 1907282 |
| Description: | Means To Control Sound Of Alarm |
| Inventor(s): | John Waldheim |
| Patent Date: | May 2, 1933 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
