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1917 advertisements.

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Photo sizes

✔ S - small (294 x 432)
✔ M - medium (404 x 594)
✔ L - large (514 x 756)
✔ Original (846 x 1242)

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1917 ads-xx.jpg

Bulletin Number G1.

Elmer E. Woodward's state-of-the-art oil pressure relay valve water wheel governors patented in 1912.

Posted on: Saturday 1 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.
Visits: 1965

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