Granted Patent
Utility
US 4,242,181 · App. 06/093,081
Copper plating process for printed circuit boards
Inventor:
Thomas P. Malak
Patented Case
View Patent ↗
Granted: Dec 30, 1980
Filed: Nov 9, 1979
Inventor
Thomas P. Malak
Assignee (at issue)
The Harshaw Chemical 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.