6 photos
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SPEED GOVERNOR PATENT 2,660,421.
5 photos
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THE PSYCHOLOGY OF THE INVENTOR.
45 photos
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An American Inventor history project for 2021.
5 photos
126 photos in 2 sub-albumsMechanical things patented back in the day.
- Elmer Woodward hydraulic(oil pressure) turbine water wheel governor patent.
- Relay valve oil pressure water wheel governor patent 1,106,434.
- Elmer E. Woodward's first oil pressure(hydraulic) water wheel governor.
- 1106434. Page 3.
- 11064341 sheet 1 of 2.
- AMERICAN INVENTOR.
- Woodward diesel engine governor patent 2,039,507. Page 2
- The first Woodward patent added to the patent archives.
- Diesel engine governor patent 2,039,027
- WOODWARD WATER WHEEL GOVERNOR PATENT 432,105. PAGE 3
- 1106434. Page 4.
- Elmer E. Woodward diesel engine patent 2,039,507.
- 1106434. Page 5.
- Patent 2,756,725 governor for internal combustion engine.
- 608245 2