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Patents for Joseph R. Brown
Patents 1 - 4 of 4
First set of recordsLast set of records
45,294Nov. 29, 1864J.R. BrownImproved Cutter for Cutting Gear-Wheelsmilling machine cutters
46,521Feb. 21, 1865J.R. BrownImproved Milling Machinemilling machines
51,257Nov. 28, 1865J.R. BrownScrew Cutting Machinescrew machines
56,495Jul. 17, 1866L.F. GrantImprovement in Making Gear-Cuttersmilling machines
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