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Patents for Harold L. Heywood
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
2,392,963	Jan. 15, 1946	H.L. Heywood, J.B. Armitage	Milling Machine	milling machines
2,816,487	Dec. 17, 1957	J.L. Martin, H.L. Heywood, J.B. Armitage	Milling Machine	milling machines

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