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Patent Archive
#508760
Patent Information
Escape Pendulum
Sigmund Riefler
November 14, 1893
Patent #508760
Patent Number: | 508760 |
Description: | Escape Pendulum |
Inventor(s): | Sigmund Riefler |
Patent Date: | Nov 14, 1893 |
Registration Type: | Patent |
External Research: | https://www.google.c… |
Patent Document: |