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Patents for Frank A. Shoemaker | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 371,480 | Oct. 11, 1887 | F.A. Shoemaker | Belt-shifter | |
384,795 | Jun. 19, 1888 | F.A. Shoemaker | Grinding Machine | ||
![]() | 409,457 | Aug. 20, 1889 | F.A. Shoemaker, J.W. Dennis | Steam-engine | |
![]() | 424,183 | Mar. 25, 1890 | F.A. Shoemaker, J.W. Dennis | Reversing-valve for steam-engines | |
![]() | 437,941 | Oct. 07, 1890 | F.A. Shoemaker | Steam-engine | |
![]() | 728,707 | May 19, 1903 | J. Hardill | Engine Governor |