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All Patents in class 418/99
Patents 1 - 3 of 3
Number	Date	Patentee	Title	Type
208,298	Sep. 24, 1878	J. Darling	Rotary- Engines	rotary steam engines
314,389	Mar. 24, 1885	J.L. Mitchell	Rotary Engine	rotary steam engines
455,863	Jul. 14, 1891	A. Cleland	Rotary Engine	rotary steam engines

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