Pocket Watch Database
Patent Archive
#1373373
Patent Information
Sand Glass
Patrick H. Walsh
March 29, 1921
Patent #1373373
| Patent Number: | 1373373 |
| Description: | Sand Glass |
| Inventor(s): | Patrick H. Walsh |
| Patent Date: | Mar 29, 1921 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
