Granted Patent
Utility
US 5,007,439 · App. 07/121,840
Method of fabricating an all-tobacco cigarette controlling tar delivery and an all-tobacco cigarette
Inventor:
Richard D. Chumney, Jr.
Patented Case
View Patent ↗
Granted: Apr 16, 1991
Filed: Nov 17, 1987
Inventor
Richard D. Chumney, Jr.
Assignee (at issue)
The American Tobacco Company
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.