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Patent Archive
#272978
Patent Information
Pendulum
Otto C. Retsloff
February 27, 1883
Patent #272978
| Patent Number: | 272978 |
| Description: | Pendulum |
| Inventor(s): | Otto C. Retsloff |
| Patent Date: | Feb 27, 1883 |
| Registration Type: | Patent |
| External Research: | https://www.google.c… |
| Patent Document: |
