Granted Patent
Utility
US 5,592,955 · App. 08/192,737
Cigarette with insulating shell and method for making same
Inventor:
Gus D. Keritsis
Patented Case
View Patent ↗
Granted: Jan 14, 1997
Filed: Feb 7, 1994
Inventor
Gus D. Keritsis
Assignee (at issue)
Philip Morris Inc.
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.