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Patents for E. T. Brown
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
50,320Oct. 10, 1865J.M. AlbertsonImprovement in cut-off valves
75,870Mar. 24, 1868C.M. DabollImprovement in braces for bitsbrace chucks
80,812Aug. 11, 1868C.M. DabollImprovement in drill-stockeggbeater drills
94,441Aug. 31, 1869H. ReynoldsApparatus for Welding Chain Linkschain making machines
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