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Relay valve oil pressure water wheel governor patent 1106434 3

1106434 3.jpg Elmer Woodward hydraulic(oil pressure) turbine water wheel governor patent. Thumbnails Elmer E. Woodward's first oil pressure(hydraulic) water wheel governor. Elmer Woodward hydraulic(oil pressure) turbine water wheel governor patent. Thumbnails Elmer E. Woodward's first oil pressure(hydraulic) water wheel governor. Elmer Woodward hydraulic(oil pressure) turbine water wheel governor patent. Thumbnails Elmer E. Woodward's first oil pressure(hydraulic) water wheel governor. Elmer Woodward hydraulic(oil pressure) turbine water wheel governor patent. Thumbnails Elmer E. Woodward's first oil pressure(hydraulic) water wheel governor.