Granted Patent
Utility
US 4,791,942 · App. 06/892,005
Process and apparatus for the expansion of tobacco
Inventors:
Frederic L. Rickett, Peder M. Pedersen, Eugene Glock
Patented Case
View Patent ↗
Granted: Dec 20, 1988
Filed: Aug 1, 1986
Inventors
Frederic L. Rickett
Peder M. Pedersen
Eugene Glock
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.