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Patents for John W. Chapman
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
5,902	Nov. 07, 1848	J.W. Chapman, W.Z. Chapman	Honing Machine	sharpening machines
2,058,855	Oct. 27, 1936	J.W. Chapman	Yankee 3400	ratcheting screwdrivers

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