The present invention is directed to a pencil-sharpening device having a titanium chromium nitride coating disposed on the cutting blade of the device. The titanium chromium nitride coating is metallurgically bonded to the steel blade. The coated blade provides enhanced properties for the pencil.
申请公布号
WO2007056751(A3)
申请公布日期
2008.03.13
申请号
WO2006US60677
申请日期
2006.11.08
申请人
ACME UNITED CORPORATION;JOHNSEN, WALTER;PETERSON, MICHAEL, E.;FARNWORTH, STUART, DAVID;BUCHTMANN, LARRY
发明人
JOHNSEN, WALTER;PETERSON, MICHAEL, E.;FARNWORTH, STUART, DAVID;BUCHTMANN, LARRY
