Pocket Watch Database
Patent Archive
#1930256
Patent Information
Clock System Self Regulate
Alfred L. Sprecker
October 10, 1933
Patent #1930256
| Patent Number: | 1930256 |
| Description: | Clock System Self Regulate |
| Inventor(s): | Alfred L. Sprecker |
| Assignee: | Ibm Corp |
| Patent Date: | Oct 10, 1933 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
