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All Patents in class 110/175R
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
179,777Jul. 11, 1876J. EnrightDamper for Return Tube Boilerstationary boilers
1,513,425Oct. 28, 1924D.W. RobbAir-heating attachment for furnaces
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