Inventor
SPRINKEL JR FRANCIS M
US6 patents
Patents
6 patentsUS4717017AJan 5, 1988
Package with means for releasing aromatic substance on opening
PHILIP MORRIS INC162 citations98
US4687008AAug 18, 1987
Filter cigarette
PHILIP MORRIS INC178 citations98
US4699158AOct 13, 1987
Adjustable filter cigarette with tactile indicator
PHILIP MORRIS INC81 citations94
US4677995AJul 7, 1987
Filter cigarette
PHILIP MORRIS INC142 citations94
US4848375AJul 18, 1989
Filter cigarette
PHILIP MORRIS INC106 citations92
US4869276ASep 26, 1989
Hinged filter sleeve
PHILIP MORRIS INC6 citations61