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Patents for Arthur H. Sweetland
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
D58,117Jun. 07, 1921A.H. SweetlandDesign for an electrically-operated hand-drillhandheld power drills
1,411,538Apr. 04, 1922A.H. SweetlandHand drillhandheld power drills
CA-221,357Jul. 25, 1922A.H. SweetlandHand drillhandheld power drills
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