| 申请人 |
BETZDEARBORN INC., TREVOSE, PA., US |
发明人 |
ALDRIDGE, IRENE YEATMAN, LAUREL, MD 20723, US;CHMURNY, ALAN BRUCE, FREDERICK, MD 21701, US;DURHAM, DONALD RICHARD, GAITHERSBURG, MARYLAND 20760, US;ROBERTS, ROWENA LISA, MARYLAND 20882, US;FAN, LAI-DUIEN GRACE, LAKE ZURICH, ILL. 60047, US |
