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Patents for Williams Robert J. W
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
3,176,449	Apr. 06, 1965	C.S. Schultz, W.R. W	Reverse-jet type dust filter
CA-762,268	Jul. 04, 1967	W.R. W, C.S. Schultz	Reverse-jet type dust filter

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