Granted Patent
Utility
US 5,377,697 · App. 08/113,539
Cigarette filter test apparatus and associated method for measuring filter hot collapse and tobacco consumption
Inventors:
Lance J. Deutsch, Pamela D. Park, George C. Trail, Jr.
Patented Case
View Patent ↗
Granted: Jan 3, 1995
Filed: Aug 27, 1993
Inventors
Lance J. Deutsch
Pamela D. Park
George C. Trail, Jr.
Assignee (at issue)
Hoechst Celanese Corporation
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.