Granted Patent
Utility
US 4,452,683 · App. 06/452,268
Anodic structure for cathodic protection
Inventors:
Oronzio de Nora, Giuseppe Bianchi
Patented Case
View Patent ↗
Granted: Jun 5, 1984
Filed: Dec 22, 1982
Inventors
Oronzio de Nora
Giuseppe Bianchi
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.