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Patents for Hart Manufacturing Company
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
46,191Jan. 31, 1865H.K. JonesImproved Machine for Indicating Carpenters' Squarestool making machines
93,449Aug. 10, 1869H.K. JonesImprovement in Machine for Graduating Carpenters' Squarestool making machines
110,623Jan. 03, 1871C.S. BementImprovement in Machines for Marking Squarestool making machines
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