Granted Patent
Utility
US 4,833,671 · App. 07/118,897
DTDM multiplexing circuitry
Inventors:
Mark Beckner, Frederick D. Porter, Kuang-I Shu
Patented Case
View Patent ↗
Granted: May 23, 1989
Filed: Nov 10, 1987
Inventors
Mark Beckner
Frederick D. Porter
Kuang-I Shu
Assignee (at issue)
Bell Communications Research, Inc.
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.