Pocket Watch Database
Patent Archive
#3103099
Patent Information
Timer Sand Glass
Raymond J. Hanks
September 10, 1963
Patent #3103099
| Patent Number: | 3103099 |
| Description: | Timer Sand Glass |
| Inventor(s): | Raymond J. Hanks |
| Patent Date: | Sep 10, 1963 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
