Pocket Watch Database
Patent Archive
#2146138
Patent Information
Clock Advertise
Heinrich Grass
February 7, 1939
Patent #2146138
| Patent Number: | 2146138 |
| Description: | Clock Advertise |
| Inventor(s): | Heinrich Grass |
| Patent Date: | Feb 7, 1939 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
