Granted Patent
Utility
US 5,912,950 · App. 08/594,016
Telephone network with normally off hook telephones
Inventor:
Howard Bubb
Patented Case
View Patent ↗
Granted: Jun 15, 1999
Filed: Jan 30, 1996
Inventor
Howard Bubb
Assignee (at issue)
Dialogic 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.