Granted Patent
Utility
US 4,620,557 · App. 06/558,245
Cigarette having a mouthpiece and method of making same
Inventors:
Daniel Verdin Cantrell, Dale A. Halverstadt, David Lynn Gordon
Patented Case
View Patent ↗
Granted: Nov 4, 1986
Filed: Dec 5, 1983
Inventors
Daniel Verdin Cantrell
Dale A. Halverstadt
David Lynn Gordon
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.