| 申请人 |
WILLIAM H. KAUFMAN INC., KITCHENER, ONTARIO, CA |
发明人 |
KAUFMAN, WILLIAM H., KITCHENER, ONTARIO N2M 2P9, CA;HARRISON, FREDERICK A., KITCHENER, ONTARIO N2H 2A2, CA;GIDMAN, CLAUDE J., TORONTO, ONTARIO M5T 2W7, CA;BEEKENKAMP, GERALD, PARIS, ONTARIO N3L 2X8, CA |
