Granted Patent
Utility
US 4,517,023 · App. 06/612,777
Rust removal process using removable coatings of maleic acid copolymers
Inventor:
Eugene S. Barabas
Patented Case
View Patent ↗
Granted: May 14, 1985
Filed: May 22, 1984
Inventor
Eugene S. Barabas
Assignee (at issue)
GAF 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.