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Patents for Joseph R. Whittles
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	1,927,007	Sep. 12, 1933	J.R. Whittles	Grinding machine
	1,978,181	Oct. 23, 1934	J.R. Whittles	Hydraulically driven surface grinding machine

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