Granted Patent
Utility
US 4,750,977 · App. 06/943,254
Electrochemical plating of platinum black utilizing ultrasonic agitation
Inventor:
Carl A. Marrese
Patented Case
View Patent ↗
Granted: Jun 14, 1988
Filed: Dec 17, 1986
Inventor
Carl A. Marrese
Assignee (at issue)
BACHARACH, INC.
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.