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Patents for Fredrick W. Billker
Patents 1 - 5 of 5
First set of recordsLast set of records
NumberDatePatenteeTitleType
2,015,250Sep. 24, 1935F.W. BillkerCutting machineprinter
2,109,057Feb. 22, 1938J.B. Ball, F.W. BillkerCutting machineprinter
2,165,953Jul. 11, 1939J.B. Ball, F.W. BillkerCutting machineprinter
2,195,557Apr. 02, 1940H.J. Tapper, F.W. BillkerAngle gaugeprinter
2,224,335Dec. 10, 1940H.J. Tapper, F.W. BillkerSlug resurfacerprinter
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