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All Patents in class 91/174 | |||||
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Picture | Number | Date | Patentee | Title | |
313,728 | Mar. 10, 1885 | D.D. Hardy | Steam Engine | ||
355,037 | Dec. 28, 1886 | E.C. Terry | Piston Water Meter | ||
![]() | 871,086 | Nov. 12, 1907 | W.O. Duntley, G.H. Hayes | Engine |