Granted Patent
Utility
US 4,528,259 · App. 06/550,379
Printed wiring boards with solder mask over bare copper wires having large area thickened circuit pad connections
Inventor:
Donald F. Sullivan
Patented Case
View Patent ↗
Granted: Jul 9, 1985
Filed: Nov 10, 1983
Inventor
Donald F. Sullivan
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.