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Patents for R. J. Campbell
Patents 1 - 3 of 3
First set of recordsLast set of records
12,122Jan. 02, 1855T.H. BurleyDovetailing machinedovetailing machines
RE4,019Jun. 07, 1870C.Z. KrohImprovement in Curtain-Knobs
125,676Apr. 16, 1872W. HeckeetImprovement in Devices for Changing Speed and Reversing Motion of Planing and Other Analogous Machinesmetal planers
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