Granted Patent
Utility
US 4,933,647 · App. 07/348,777
AGC circuit
Inventors:
Frank Dea, Tam Nguyen
Patented Case
View Patent ↗
Granted: Jun 12, 1990
Filed: May 8, 1989
Inventors
Frank Dea
Tam Nguyen
Assignee (at issue)
Mitel 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.