Home / HISTORICAL WATER POWER ENGINEERING. 188
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- Saving obsolete Woodward governor history.
- Circa 1925.
- 1
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- The Mechanical News, an illustrated journal of. v23 no 9. Circa 1893.
- November 1993 PMC.
- THE LOMBARD GOVERNOR COMPANY 1899.
- PATENT NUMBER 1,035,082.
- 1893 advertisement for the James Leffel & Company.
- PATENT NUMBER 307,759.
- The Mechanical News magazine history.
- PATENT NUMBER 1,035,082.
- PATENT NUMBER 1,035,082.
- PATENT NUMBER 307,759.