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Patents for David D. Walker
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	3,313,187	Apr. 11, 1967	M.L. Benjamin, D.D. Walker	Boring bar insert
	3,364,799	Jan. 23, 1968	W.N. Miles, D.D. Walker, M.L. Benjamin	Offset Boring Head
	3,941,014	Mar. 02, 1976	D.D. Walker, M.L. Benjamin	Precision Heavy Duty Indexer
	4,080,849	Mar. 28, 1978	W.N. Miles, D.D. Walker, M.L. Benjamin	Precision Heavy Duty Indexer

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