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Patent Archive
#452450
Patent Information
Calendar Perpetual
Eustache Auguste Cresson
May 19, 1891
Patent #452450
| Patent Number: | 452450 |
| Description: | Calendar Perpetual |
| Inventor(s): | Eustache Auguste Cresson |
| Patent Date: | May 19, 1891 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
