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Patents for R. F. Campbell
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
53,899Apr. 10, 1866H.H. Andresen, E.K. ThomasImprovements in Planes for Making Blind-Splatssplint planes
70,755Nov. 12, 1867J. SmallMachine for Tempering Saws, Files, etc.files
82,450Sep. 22, 1868J.B. TarrImprovement in carpenters' planesbench planes
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