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Patents for Hallis N. Stephan
Patents 1 - 11 of 11
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,947,862Feb. 20, 1934H.N. Stephan, H.M. LucasSpecial High Speed Drive for the Spindle of Boring Machine and Other Machine Toolshorizontal boring mills
2,208,311Jul. 16, 1940H.N. Stephan, H.M. LucasHorizontal Boring Machinehorizontal boring mills
2,208,312Jul. 16, 1940H.N. Stephan, H.M. LucasHorizontal Boring Machinehorizontal boring mills
2,255,176Sep. 09, 1941H.N. Stephan, H.M. LucasHorizontal Boring Machinehorizontal boring mills
2,266,647Dec. 16, 1941H.N. Stephan, H.M. LucasHorizontal Boring Machinehorizontal boring mills
2,274,171Feb. 24, 1942H.N. StephanHorizontal Boring and Milling Machinehorizontal boring mills
2,310,878Feb. 09, 1943H.N. StephanMachine Toolhorizontal boring mills
2,339,435Jan. 18, 1944H.N. StephanMachine Toolhorizontal boring mills
2,350,174May 30, 1944H.N. Stephan, H.M. LucasBoring Machinehorizontal boring mills
2,648,999Aug. 18, 1953H.N. StephanHorizontal boring, drilling and milling machinemilling machines
3,023,675Mar. 06, 1962H.N. StephanHorizontal boring, drilling and milling machinemilling machines
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