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Patents for Walter R. Johnson
Patents 1 - 5 of 5
First set of recordsLast set of records
NumberDatePatenteeTitleType
6,294Apr. 10, 1849H. KnowlesPlaning-machinewood planers
6,380Apr. 24, 1849G. HathewaySawmill with cylindrical sawscylindrical saws
6,443May 08, 1849H. LawMachinery for dressing stavescooper
7,543Aug. 06, 1850H. CarverScraper Plane with a Frame Bodyscraper planes
7,755Nov. 05, 1850J. Judson, A. JudsonValve for governorssteam engine governors
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