Granted Patent
Utility
US 5,213,872 · App. 07/687,989
Preprinted retroreflective highway sign and method for making the sign
Inventors:
Robert M. Pricone, Richard Zanotti, Alex Szopinski
Patented Case
View Patent ↗
Granted: May 25, 1993
Filed: Apr 19, 1991
Inventors
Robert M. Pricone
Richard Zanotti
Alex Szopinski
Assignee (at issue)
Stimsonite Corporation
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.