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Patents Granted on 1852-11-16
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
9,398Nov. 16, 1852C.L. BarnesExpanding bitadjustable drill bits
9,410Nov. 16, 1852S.P. RugglesImprovement in Printing-Pressesprinting presses
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