Pocket Watch Database
Patent Archive
#2592047
Patent Information
Clock Operated Perpetual Calendar
John Lind
April 8, 1952
Patent #2592047
| Patent Number: | 2592047 |
| Description: | Clock Operated Perpetual Calendar |
| Inventor(s): | John Lind |
| Assignee: | Otis A E |
| Patent Date: | Apr 8, 1952 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
