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All Patents in class 137/115.27
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,786,402Dec. 23, 1930P.S. RusselRegulatorpressure regulators
2,104,700Jan. 04, 1938P.S. RusselPressure Regulating Devicepressure regulators
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