Granted Patent
Utility
US 5,017,271 · App. 07/572,849
Method for printed circuit board pattern making using selectively etchable metal layers
Inventors:
Christopher J. Whewell, Sidney J. Clouser, Chin-Ho Lee
Patented Case
View Patent ↗
Granted: May 21, 1991
Filed: Aug 24, 1990
Inventors
Christopher J. Whewell
Sidney J. Clouser
Chin-Ho Lee
Assignee (at issue)
Gould 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.