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Patents for R. B. Robbins
Patents 1 - 5 of 5
First set of recordsLast set of records
81,511Aug. 25, 1868P.H. KellsImproved brick-machinebrick and tile making machines
100,541Mar. 08, 1870A.Z. MasonWoodworker's Leg Vise Jawleg vises
124,590Mar. 12, 1872P.H. KellsImprovement in brick-machinesbrick and tile making machines
202,948Apr. 30, 1878P.H. KellsImprovement in brick and tile machinesbrick and tile making machines
363,588May 24, 1887F.M. CarnahanStump-sawing machinetree felling machines
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