Granted Patent
Utility
US 4,973,172 · App. 07/501,745
Coated products for use in harsh environs
Inventors:
Donald L. Nisley, Randall H. Alvis
Patented Case
View Patent ↗
Granted: Nov 27, 1990
Filed: Mar 29, 1990
Inventors
Donald L. Nisley
Randall H. Alvis
Assignee (at issue)
Reliance Electric Industrial Company
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.