Granted Patent
Utility
US 6,127,902 · App. 09/057,193
Waveguide directional coupler capable of propagating higher order modes
Inventors:
Werner Speldrich, Uwe Rosenberg
Patented Case
View Patent ↗
Granted: Oct 3, 2000
Filed: Apr 8, 1998
Inventors
Werner Speldrich
Uwe Rosenberg
Assignee (at issue)
Robert Bosch GmbH
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.