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Patents for Nathan T. Coffin
Patents 1 - 7 of 7
First set of recordsLast set of records
9,848Jul. 12, 1853N.T. CoffinImprovement in Forming Teeth on Mill Sawstool making machines
9,856Jul. 19, 1853N.T. CoffinHanging sawsreciprocating sawmills
14,305Feb. 26, 1856N.T. CoffinMill-sawsawblades
105,912Aug. 02, 1870N.T. CoffinImprovement in machine for securing sheet-metal lining in pump-stocks
105,913Aug. 02, 1870N.T. CoffinImprovement in pump-valve
112,018Feb. 21, 1871N.T. CoffinImprovement in pumps
113,144Mar. 28, 1871N.T. CoffinImprovement in pumps
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