Granted Patent
Utility
US 4,457,317 · App. 06/406,630
Method of removal of paper wraps from cigarette filter rods
Inventors:
James M. Thompson, David Denton
Patented Case
View Patent ↗
Granted: Jul 3, 1984
Filed: Aug 9, 1982
Inventors
James M. Thompson
David Denton
Assignee (at issue)
EASTMAN KODAK 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.