Granted Patent
Utility
US 4,646,091 · App. 06/664,667
Airborne set for a two-way distance-ranging system
Inventor:
Hermann-Josef Behrens
Patented Case
View Patent ↗
Granted: Feb 24, 1987
Filed: Oct 25, 1984
Inventor
Hermann-Josef Behrens
Assignee (at issue)
International Standard Electric 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.