Granted Patent
Utility
US 5,722,431 · App. 08/751,481
Method and plant for treating tobacco leaves for the production of cut tobacco
Inventors:
Wolfgang Metzner, Bernd Spallek, Arno Weiss
Patented Case
View Patent ↗
Granted: Mar 3, 1998
Filed: Nov 18, 1996
Inventors
Wolfgang Metzner
Bernd Spallek
Arno Weiss
Assignee (at issue)
British-American Tobacco (Holdings) Limited
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.