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Patents for J. D. Putnam & Co.
Patents 1 - 3 of 3
Number	Date	Patentee	Title	Type
173,767	Feb. 22, 1876	H.B. Cornish, C.P. Hunt	Improvement in machines for sawing staves	barrel making machines
173,781	Feb. 22, 1876	I. Graves	Improvement in machines for crozing staves	barrel making machines
175,669	Apr. 04, 1876	H.B. Cornish, C.P. Hunt	Improvement in machines for jointing staves	barrel making machines

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