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- Created on
- Monday 31 July 2017
- Posted on
- Monday 31 July 2017
- Albums
- HISTORICAL WATER POWER ENGINEERING. / A few Water Wheel Governor and Turbine Water Wheel Manufacturers from the U.S.A. / Woodward Oil Pressure Relay Valve Water Wheel Governor history. / Woodward Governor Company history on Hydraulic type Water Wheel Governor Systems. / ELMER WOODWARD OIL PRESSURE SPEED REGULATOR PATENT NUMBER 1,106,434, CIRCA 1912.
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