Granted Patent
Utility
US 4,197,233 · App. 05/886,951
Anti-fouling and anti-sliming coating material
Inventor:
David W. Marshall
Patented Case
View Patent ↗
Granted: Apr 8, 1980
Filed: Mar 15, 1978
Inventor
David W. Marshall
Assignee (at issue)
Kennecott Copper 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.