| 申请人 |
THE CARBORUNDUM CO., CLEVELAND, OHIO, US |
发明人 |
BOECKER, WOLFGANG D.G., LEWISTON NEW YORK 14092, US;FRECHETTE, FRANCIS J., TONAWANDA NEW YORK 14150, US;KASPRZYK, MARTIN RICHARD, RANSOMVILLE NEW YORK 14131, US;MCMURTY, CARL HEWES, YOUNGSTOWN NEW YORK 14174, US |
