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Patents Granted on 1831-11-07
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
6,826XNov. 07, 1831R. CromelinMatresses, sofas, etc.
6,827XNov. 07, 1831H. SpencerThrashing machinethreshers or thrashers
6,828XNov. 07, 1831O. TuftsStrengthening toggle joint in the hand pressprinting presses
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