All Patents in class 91/316


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All Patents in class 91/316
Patents 1 - 3 of 3
Number	Date	Patentee	Title	Type
464,820	Dec. 08, 1891	D. Drawbaugh	Pneumatic Tool for rock-cutting
513,941	Jan. 30, 1894	C.B. King	Pneumatic tool	pneumatic tools
649,754	May 15, 1900	C.B. Richards	Pneumatic Tool	pneumatic tools