Granted Patent
Utility
US 4,377,540 · App. 06/295,648
Control of tubular film size
Inventors:
Ronald D. Cluett, Richard L. Mitchell
Patented Case
View Patent ↗
Granted: Mar 22, 1983
Filed: Aug 24, 1981
Inventors
Ronald D. Cluett
Richard L. Mitchell
Assignee (at issue)
Gloucester Engineering Co., Inc.
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.