Granted Patent
Utility
US 5,301,891 · App. 07/940,517
Method and means for preventing the lifting of the leading edge of a web on a rotating web roll due to windage
Inventor:
Robert Duguay
Patented Case
View Patent ↗
Granted: Apr 12, 1994
Filed: Sep 4, 1992
Inventor
Robert Duguay
Assignee (at issue)
Butler Automatic, 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.