Granted Patent
Utility
US 5,235,139 · App. 07/581,030
Method for fabricating printed circuits
Inventors:
Jon Bengston, Gary B. Larson
Patented Case
View Patent ↗
Granted: Aug 10, 1993
Filed: Sep 12, 1990
Inventors
Jon Bengston
Gary B. Larson
Assignee (at issue)
MacDermid, Incorporated
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.