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Creation date / 2012 / January / 9
- Amos Walter Woodward's patent governor from 1870.
- Amos Walter Woodward patent governor from 1870
- Amos Woodward's first friction water wheel governor.
- The Amos Woodward friction water wheel governor patent number 103,813.
- A.W. Woodward Water Wheel Governor model from 1870.
- A.W. Woodward Governor from 1870 patent.