Granted Patent
Utility
US 5,783,977 · App. 08/597,844
Tunable and bandwidth programmable multi-element filter system
Inventor:
Frank Chethik
Patented Case
View Patent ↗
Granted: Jul 21, 1998
Filed: Feb 7, 1996
Inventor
Frank Chethik
Assignee (at issue)
Loral Aerospace Corp.
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.