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All Patents in class 451/220
Patents 1 - 15 of 18
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NumberDatePatenteeTitleType
197,711Nov. 27, 1877E.J. WorcesterImprovement in machines for grinding lawn-motor cuttergrinders
230,715Aug. 03, 1880I.L. PenneyGrinding Twist Drillstool grinders
324,669Aug. 18, 1885O.C. DoneckerWood-fluting mechanismrouting machines
407,577Jul. 23, 1889J.D. Cox, Jr.Machine for back-clearing twist-drillstool making machines
418,977Jan. 07, 1890C.E. ForryMachine for Grinding Lawn Mower Knivessharpening machines
626,436Jun. 06, 1899E. MillsGrinding Machinetool grinders
636,540Nov. 07, 1899S.E. LoudenDevice for Holding Lawn Mower Cutters for Sharpeningmetal lathe accessories and attachments
709,178Sep. 16, 1902S.C. SchofieldTool Holder and Guide for Grindstonesgrinding machines
1,075,285Oct. 07, 1913A.L. De LeeuwCutter Setting Dialtool grinders
1,274,502Aug. 06, 1918O.S. BickfordMachine for Flutiing Twist Drill Blanksmaking drills and augers
1,287,732Dec. 17, 1918F. MüllerMachine for Milling Knurlsembossing and knurling machines
1,658,185Feb. 07, 1928R.L. CarterTool-grinding mechanismwoodworking machine sharpening mechanisms
2,212,855Aug. 27, 1940W.N. ChittendenCombination Tool Head and Grinding Mechanismtool grinders
2,768,478Oct. 30, 1956C.E. WallerPattern Controlled Cutter Grindertool grinders
2,805,522Sep. 10, 1957T.S. DaytonApparatus for Sharpening Wood Bitsdrill sharpening machines
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