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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, 1938F.W. Billker, J.B. BallCutting machineprinter
2,165,953Jul. 11, 1939F.W. Billker, J.B. BallCutting machineprinter
2,195,557Apr. 02, 1940F.W. Billker, H.J. TapperAngle gaugeprinter
2,224,335Dec. 10, 1940H.J. Tapper, F.W. BillkerSlug resurfacerprinter
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