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Patents for John Butterworth
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
5,319XDec. 30, 1828J. ButterworthPreparing grooves for mule drums
6,615XJul. 20, 1831J. ButterworthIron Hoops to Be Applied to the Bottoms of Card and Drawing Cansmetal bending machines
624,750May 09, 1899J. Butterworth, W.H. ButterworthGas Enginegas and gasoline engines
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