Granted Patent
Utility
US 5,267,300 · App. 07/772,514
High speed digital data transmission over switched voice network
Inventors:
Ming-Luh Kao, Jerry A. Miller
Patented Case
View Patent ↗
Granted: Nov 30, 1993
Filed: Oct 7, 1991
Inventors
Ming-Luh Kao
Jerry A. Miller
Assignee (at issue)
Racal-Datacom Limited
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.