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All Patents in class 451/458
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
732,381Jun. 30, 1903C.C. StuartAutomatic yielding pressure-bars for sandpapering-machinessanding machines
779,630Jan. 10, 1905F. UrbanSanding or polishing machinesanding machines
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