Patents for Horatio Allen


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Patents for Horatio Allen
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	2,227	Aug. 21, 1841	H. Allen	Cut-off valve for steam-engines
	6,092	Feb. 06, 1849	H. Allen	Adjustable Lever Cut-Off with Secondary Toe
	6,093	Feb. 06, 1849	H. Allen	Adjustable Lever Cut-Off with Secondary Toe