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All Patents in class 173/136
Patents 1 - 4 of 4
Number	Date	Patentee	Title	Type
271,781	Feb. 06, 1883	B. Brazelle	Steam-engine	pneumatic tools
472,495	Apr. 05, 1892	D. Drawbaugh	Pneumatic tool
504,803	Sep. 12, 1893	D. Drawbaugh	Pneumatic tool
530,934	Dec. 18, 1894	D. Drawbaugh	Pneumatic tool

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