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Patents for Robert Schümann
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
2,031,133Feb. 18, 1936R. SchümannElectric Hand Toolhandheld grinders
2,368,888Feb. 06, 1945R. SchümannSmall Electric Machine Toolhandheld grinders
2,377,271May 29, 1945R. SchümannFlexible Shaft And Air-Cooled Hand Piecehandheld power tool accessories
2,452,268Oct. 26, 1948R. SchümannMotor Hand Tool Assemblyhandheld grinders
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