Granted Patent
Utility
US 5,754,642 · App. 08/842,820
Telephone terminal having multiple handsets
Inventors:
Yoshihisa Domoto, Yasuo Wada
Patented Case
View Patent ↗
Granted: May 19, 1998
Filed: Apr 17, 1997
Inventors
Yoshihisa Domoto
Yasuo Wada
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.