Granted Patent
Utility
US 5,953,313 · App. 08/796,032
Circuit switching control method for multiplex communication equipment
Inventors:
Ikuo Aso, Kazumasa Azuma, Kaoru Suzuki, Sakae Watanabe
Patented Case
View Patent ↗
Granted: Sep 14, 1999
Filed: Feb 5, 1997
Inventors
Ikuo Aso
Kazumasa Azuma
Kaoru Suzuki
Sakae Watanabe
Assignee (at issue)
Hitachi Telecom Technologies, Ltd
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.