Granted Patent
Utility
US 4,792,770 · App. 07/067,324
Waveguide directional coupler with multiple coupled outputs
Inventors:
Sharad V. Parekh, Seymour Shapiro, Charles E. Profera, Jr.
Patented Case
View Patent ↗
Granted: Dec 20, 1988
Filed: Jun 29, 1987
Inventors
Sharad V. Parekh
Seymour Shapiro
Charles E. Profera, Jr.
Assignee (at issue)
General Electric 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.