Granted Patent
Utility
US 4,950,413 · App. 07/272,361
Electrically conductive phthalocyanine complex-filled lubricants
Inventors:
David J. Boes, Mary Anne Alvin, George R. Kelecava
Patented Case
View Patent ↗
Granted: Aug 21, 1990
Filed: Nov 17, 1988
Inventors
David J. Boes
Mary Anne Alvin
George R. Kelecava
Assignee (at issue)
Westinghouse Electric Company LLC
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.