Pocket Watch Database
Patent Archive
#3101587
Patent Information
Timer Sand Glass
Malcolm W. Patrick
August 27, 1963
Patent #3101587
| Patent Number: | 3101587 |
| Description: | Timer Sand Glass |
| Inventor(s): | Malcolm W. Patrick |
| Patent Date: | Aug 27, 1963 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
