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All Patents in class 175/219
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
367,783Aug. 09, 1887J.S. BrownWell Drilling and Piping Machinewell drilling machines
626,933Jun. 13, 1899J. ReidApparatus for Drilling Wellsoilfield machinery
685,641Oct. 29, 1901J. ReidApparatus for Drilling and Operating Oil Wellsoilfield machinery
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