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Elmer E. Woodward's first oil pressure(hydraulic) water wheel governor.

1106434 4.jpg Relay valve oil pressure water wheel governor patent 1,106,434.Thumbnails1106434.  Page 3.Relay valve oil pressure water wheel governor patent 1,106,434.Thumbnails1106434.  Page 3.Relay valve oil pressure water wheel governor patent 1,106,434.Thumbnails1106434.  Page 3.Relay valve oil pressure water wheel governor patent 1,106,434.Thumbnails1106434.  Page 3.
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Eastman Kodak Company
DateTimeOriginal
2010:07:18 13:46:58

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