Granted Patent
Utility
US 4,540,005 · App. 06/558,222
Cigarette having a mouthpiece
Inventors:
Daniel Verdin Cantrell, Dale A. Halverstadt
Patented Case
View Patent ↗
Granted: Sep 10, 1985
Filed: Dec 5, 1983
Inventors
Daniel Verdin Cantrell
Dale A. Halverstadt
Assignee (at issue)
Brown & Williamson Tobacco 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.