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All Patents in class 73
Patents 316 - 330 of 660
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NumberDatePatenteeTitleType
1,138,082May 04, 1915W.H. CarrierHygrostat or thermostatic device
1,145,902Jul. 13, 1915E.A. KelseySighting Glasslubricating accessories
1,147,835Jul. 27, 1915R. WoodLow Water Alarm for Steam Boilers and the Likelow water alarms
1,154,018Sep. 21, 1915F.H. HopkinsDead Weight Gage Testertesting machines
1,154,663Sep. 28, 1915W.F. ShoreScleroscopemetal hardness testers
1,161,875Nov. 30, 1915H.C. MorrowGas Engine Recorderinternal combustion engine indicators
1,165,225Dec. 21, 1915W.H. CarrierHumidity meter
1,166,070Dec. 28, 1915C.J. ManningGage for Indicating Fluid Pressuresvacuum and pressure gauges
1,169,617Jan. 25, 1916E.W. ComfortThermo-electric humidity instrument
1,169,982Feb. 01, 1916C.J. ManningPressure Gagevacuum and pressure gauges
1,190,945Jul. 11, 1916J.L. OsbornePump Controlling Devicepumps
1,190,946Jul. 11, 1916J.L. OsborneGovernorsteam engine governors
1,192,443Jul. 25, 1916C.J. ManningDouble Spring Gagevacuum and pressure gauges
1,201,821Oct. 17, 1916F.G. Hobart, C.B. JahnkeCombined governor and speed-regulatorinternal combustion engine governors
1,209,359Dec. 19, 1916N. TeslaSpeed-indicator
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