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All Patents of Type: temperature gauges
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
284,382Sep. 04, 1883C.L. ClarkeCircuit and Apparatus for Electric Temperature and Pressure Indicatorvacuum and pressure gauges
494,244Mar. 28, 1893E. BrownPyrometertemperature gauges
1,404,771Jan. 31, 1922F.H. HopkinsCompensating Thermometertemperature gauges
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