申请人 |
ETHYL PETROLEUM ADDITIVES, INC., RICHMOND, VA., US;ETHYL CORP., BATON ROUGE, LA., US |
发明人 |
HANLON, JOHN VINCENT, ST. LOUIS, MISSOURI 63131, US;KOLICH, CHARLES HOWARD, BATON ROUGE, LOUISIANA 70816, US;BOSTICK, JOHN GRAY, SMITHTOWN, ILLINOIS 62285, US |