Granted Patent
Utility
US 4,500,610 · App. 06/475,734
Corrosion resistant substrate with metallic undercoat and chromium topcoat
Inventors:
Walter H. Gunn, Alexander W. Kennedy
Patented Case
View Patent ↗
Granted: Feb 19, 1985
Filed: Mar 16, 1983
Inventors
Walter H. Gunn
Alexander W. Kennedy
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.