Granted Patent
Utility
US 4,560,962 · App. 06/527,840
Multilayered printed circuit board with controlled 100 ohm impedance
Inventor:
Michael Barrow
Patented Case
View Patent ↗
Granted: Dec 24, 1985
Filed: Aug 30, 1983
Inventor
Michael Barrow
Assignee (at issue)
Burroughs, 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.