Granted Patent
Utility
US 5,514,985 · App. 07/622,467
Virtual amplifier
Inventor:
Shy-Shiun Chern
Patented Case
View Patent ↗
Granted: May 7, 1996
Filed: Dec 5, 1990
Inventor
Shy-Shiun Chern
Assignee (at issue)
Rockwell International Corporation
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.