Granted Patent
Utility
US 4,675,631 · App. 06/692,665
Waveguide bandpass filter
Inventor:
Michael C. Waggett
Patented Case
View Patent ↗
Granted: Jun 23, 1987
Filed: Jan 17, 1985
Inventor
Michael C. Waggett
Assignee (at issue)
M/A-Com, 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.