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Patents for Daniel R. Porter
Patents 16 - 17 of 17
Number	Date	Patentee	Title	Type
482,527	Sep. 13, 1892	D.R. Porter	Pipe Wrench	screw adjust wrenches
549,745	Nov. 12, 1895	R.S. Whittier, D.R. Porter	Two-Foot Rule	folding rule joints

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