Granted Patent
Utility
US 5,972,421 · App. 09/190,749
Method for producing pelletized pavement marking mixtures
Inventor:
Walter Brian Finley
Patented Case
View Patent ↗
Granted: Oct 26, 1999
Filed: Nov 12, 1998
Inventor
Walter Brian Finley
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.