Granted Patent
Utility
US 4,471,687 · App. 06/322,369
Cushion cylinders
Inventors:
Richard Nightingale, Robert P. Vandlik
Patented Case
View Patent ↗
Granted: Sep 18, 1984
Filed: Nov 17, 1981
Inventors
Richard Nightingale
Robert P. Vandlik
Assignee (at issue)
American Can 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.