- patent number 2,765,800. Filed March 28, 1952. Patented October 9, 1956.
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- Documenting the evolution of the Woodward governor through patents.
- A Woodward Patent History Project.
- WOODWARD SPEED GOVERNOR PATENT NUMBER 2,660,421.
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- Documenting the history of the Art and Science of Governing.
- ORANGE SIZER. PATENT NUMBER 466,817, JANUARY 12, 1892.
- Page 2.
- Horizontal view.
- Horizontal view.
- Page 3.