Granted Patent
Utility
US 4,875,283 · App. 07/202,096
Method for manufacturing printed circuit boards
Inventor:
James A. Johnston
Patented Case
View Patent ↗
Granted: Oct 24, 1989
Filed: Aug 25, 1988
Inventor
James A. Johnston
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.