Granted Patent
Utility
US 4,461,039 · App. 06/419,681
Quasi-optical balanced biconical mixer
Inventor:
Michael S. Hersman
Patented Case
View Patent ↗
Granted: Jul 17, 1984
Filed: Sep 20, 1982
Inventor
Michael S. Hersman
Assignee (at issue)
Hughes Aircraft Company
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.