Granted Patent
Utility
US 4,937,533 · App. 07/395,117
Deformable diplexer filter signal coupling element apparatus
Inventor:
Robert Livingston
Patented Case
View Patent ↗
Granted: Jun 26, 1990
Filed: Aug 16, 1989
Inventor
Robert Livingston
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.