Granted Patent
Utility
US 4,718,993 · App. 07/055,562
Process for preparing the through hole walls of a printed wiring board for electroplating
Inventors:
Glenn W. Cupta, Anthony M. Piano
Patented Case
View Patent ↗
Granted: Jan 12, 1988
Filed: May 29, 1987
Inventors
Glenn W. Cupta
Anthony M. Piano
Assignee (at issue)
Olin Hunt Specialty Products, 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.