| 申请人 |
BETZDEARBORN INC., TREVOSE, PA., US |
发明人 |
KREH, ROBERT PAUL, JESSUP, MD 20794, US;RICHARDSON, JOHN, PALATINE, ILL. 60067, US;KUHN, VINCENT R., TWIN LAKES, WI 53181, US;SPOTNITZ, ROBERT M., BALTIMORE, MD 21228, US;CARTER, CHARLES GARVIE, SILVER SPRING, MD 20901, US;JOVANCICEVIC, VLADIMIR, COLUMBIA, MD 21044, US |
