Granted Patent
Utility
US 4,940,949 · App. 07/430,629
High efficiency high isolation amplifier
Inventor:
Ernest Landi
Patented Case
View Patent ↗
Granted: Jul 10, 1990
Filed: Nov 1, 1989
Inventor
Ernest Landi
Assignee (at issue)
Avantek, 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.