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- Elmer Woodward's first hydraulic water wheel governor that kept Woodward in business.
- Elmer Woodward's first hydraulic turbine water wheel governor.
- Elmer Woodward's first Hydraulic Turbine Water Wheel Governor.
- ELMER WOODWARD'S FIRST HYDRAULIC TURBINE WATER WHEEL GOVERNOR PATENT.
- ELMER WOODWARD'S FIRST HYDRAULIC TURBINE WATER WHEEL GOVERNOR PATENT.
- ELMER WOODWARD'S FIRST HYDRAULIC TURBINE WATER WHEEL GOVERNOR PATENT.
- ELMER WOODWARD'S FIRST DIESEL ENGINE HYDRAULIC GOVERNOR PATENT.
- Elmer Woodward's first diesel engine hydraulic governor patent number 2,039,507.
- Elmer Woodward's first diesel engine hydraulic governor patent number 2,039,507.
- Elmer Woodward's first diesel engine hydraulic governor patent number 2,039,507.
- Elmer Woodward's first diesel engine hydraulic governor patent number 2,039,507.
- Elmer Woodward's first diesel engine hydraulic governor patent number 2,039,507.
- Elmer Woodward's first diesel engine hydraulic governor patent number 2,039,507.
- Elmer Woodward's first diesel engine hydraulic governor patent number 2,039,507.
- Elmer Woodward's first diesel engine governor, circa 1930's.