Granted Patent
Utility
US 4,288,015 · App. 06/120,707
Contactless web turning guide
Inventor:
Larry E. Curtin
Patented Case
View Patent ↗
Granted: Sep 8, 1981
Filed: Feb 11, 1980
Inventor
Larry E. Curtin
Assignee (at issue)
W. R. Grace & Co.
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.