Granted Patent
Utility
US 5,581,593 · App. 08/369,205
Combination telephone and alphanumeric entry device
Inventors:
Robert M. Engelke, Kevin R. Colwell, Troy Vitek, Mark C. Terranova, Chuck Burk, Peter Fowler, Mike Hoghooghi, Karen M. Holmes, Wendy Scott, Roy Weidig, Chris Mitchell
Patented Case
View Patent ↗
Granted: Dec 3, 1996
Filed: Jan 5, 1995
Inventors
Robert M. Engelke
Kevin R. Colwell
Troy Vitek
Mark C. Terranova
Chuck Burk
Peter Fowler
Mike Hoghooghi
Karen M. Holmes
Wendy Scott
Roy Weidig
Chris Mitchell
Assignee (at issue)
Ultratec, 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.