Granted Patent
Utility
US 5,356,704 · App. 08/134,155
Tobacco smoke filter
Inventors:
Bobby M. Phillips, Steven Anthony Wilson, Mark A. Pollock
Patented Case
View Patent ↗
Granted: Oct 18, 1994
Filed: Oct 8, 1993
Inventors
Bobby M. Phillips
Steven Anthony Wilson
Mark A. Pollock
Assignee (at issue)
Eastman Chemical Company
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.