Granted Patent
Utility
US 5,146,514 · App. 07/769,988
Efficient single-hop directional multichannel system
Inventor:
Yitzhak Birk
Patented Case
View Patent ↗
Granted: Sep 8, 1992
Filed: Sep 30, 1991
Inventor
Yitzhak Birk
Assignee (at issue)
International Business Machines 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.