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All Patents in class 418/97
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
24,388Jun. 14, 1859D.D. HardyRotary Steam Enginerotary steam engines
683,614Oct. 01, 1901C.R. MestonAir-compressorair compressors
958,345May 17, 1910J.T. WilkinVacuum-pumpvacuum pumps
1,199,229Sep. 26, 1916B.F. AugustineRotary Explosion Enginerotary engines
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