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All Patents of Type: pressure controlled switches
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,904,311Apr. 18, 1933F.G. HobartFluid Pressure Switchpressure controlled switches
2,422,342Jun. 17, 1947E.J. DillmanPressure Regulated Electrical Controlpressure controlled switches
2,548,877Apr. 17, 1951E.J. DillmanAutomatically Operable Snap Acting Switchpressure controlled switches
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