Granted Patent
Utility
US 5,115,820 · App. 07/495,076
Smokable article
Inventors:
Bernhard Hauser, Guillermo Gerding, Knut Moller, Bernd-Henrik Muller, Gert Rudolph, Wolfgang Wiethaup
Patented Case
View Patent ↗
Granted: May 26, 1992
Filed: Mar 19, 1990
Inventors
Bernhard Hauser
Guillermo Gerding
Knut Moller
Bernd-Henrik Muller
Gert Rudolph
Wolfgang Wiethaup
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.