Granted Patent
Utility
US 4,335,464 · App. 06/115,118
Dual multipoint data transmission system modem
Inventors:
Thomas R. Armstrong, Gordon Bremer, William L. Betts
Patented Case
View Patent ↗
Granted: Jun 15, 1982
Filed: Jan 24, 1980
Inventors
Thomas R. Armstrong
Gordon Bremer
William L. Betts
Assignee (at issue)
PARADYNE 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.