Granted Patent
Utility
US 5,135,009 · App. 07/490,891
Smokable article
Inventors:
Bernd-Henrik Muller, Wolfgang Wiethaup, Guillermo Gerding, Bernhard Hauser, Knut Moller, Gert Rudolph
Patented Case
View Patent ↗
Granted: Aug 4, 1992
Filed: Mar 9, 1990
Inventors
Bernd-Henrik Muller
Wolfgang Wiethaup
Guillermo Gerding
Bernhard Hauser
Knut Moller
Gert Rudolph
Assignee (at issue)
B.A.T. Cigarettenfabriken GmbH
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.