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All Patents in class 173/203
Patents 1 - 7 of 7
First set of recordsLast set of records
NumberDatePatenteeTitleType
941,093Nov. 23, 1909J.L. PainterPower Hammerpower hammers
1,356,297Oct. 19, 1920A.T. LochnerPower-hammer
1,660,579Feb. 28, 1928J. RothHammer drill attachment for electric drillhandheld power tool accessories
1,798,082Mar. 24, 1931E.B. GrutzbachHammer attachment for electric drillshandheld power tool accessories
1,803,307Apr. 28, 1931O.P. WodackPortable electric toolhandheld power drills
1,889,441Nov. 29, 1932J.F. HaasCombined rotary and reciprocatory drillhandheld power drills
2,408,484Oct. 01, 1946A.R. SchwarzkopfPercussive toolhandheld power tools
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