Granted Patent
Utility
US 4,370,744 · App. 06/125,813
Time division multiplex communication system
Inventors:
Junzo Hirano, Yukio Inoue
Patented Case
View Patent ↗
Granted: Jan 25, 1983
Filed: Feb 28, 1980
Inventors
Junzo Hirano
Yukio Inoue
Assignee (at issue)
Nippon Telegraph and Telephone Public 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.