Pocket Watch Database
Patent Archive
#2271539
Patent Information
Clock Secondary Systen
James W. Bryce
February 3, 1942
Patent #2271539
| Patent Number: | 2271539 |
| Description: | Clock Secondary Systen |
| Inventor(s): | James W. Bryce |
| Assignee: | Ibm Corp |
| Patent Date: | Feb 3, 1942 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
