Granted Patent
Utility
US 4,504,365 · App. 06/438,106
Non-destructive cathodic disbondment testing of pipewrap coatings
Inventor:
Jordan D. Kellner
Patented Case
View Patent ↗
Granted: Mar 12, 1985
Filed: Nov 1, 1982
Inventor
Jordan D. Kellner
Assignee (at issue)
The Kendall Company LP
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.