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Patents for Horatio Allen
Patents 1 - 3 of 3
Number	Date	Patentee	Title	Type
2,227	Aug. 21, 1841	H. Allen	Cut-off valve for steam-engines	steam engine valve gear
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

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