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All Patents in class 310/216.026
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,577,976Mar. 23, 1926J.S. Knowlson, R.S. McKeagePower-driven tool-operating devicehandheld power drills
2,136,301Nov. 08, 1938J.S. Hoddy, G.W. HoddyDynamo-electric machine
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