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Patents for Amory Doolittle
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
18,282	Sep. 29, 1857	B.B. Hill	Bit-holder	corner braces
19,028	Jan. 05, 1858	B.B. Hill, S.W. Adams	Bit-holder	corner braces

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