Granted Patent
Utility
US 6,567,411 · App. 09/224,525
Method and apparatus for continuous narrowcast of individualized information over a data network
Inventor:
Robert L. Dahlen
Patented Case
View Patent ↗
Granted: May 20, 2003
Filed: Dec 31, 1998
Inventor
Robert L. Dahlen
Assignee (at issue)
Qwest Communications International Inc.
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.