Granted Patent
Utility
US 5,319,701 · App. 08/027,607
Method and apparatus for performing an automated collect call
Inventors:
John A. Hird, Lindsey D. Owen, Michael R. Rice
Patented Case
View Patent ↗
Granted: Jun 7, 1994
Filed: Mar 4, 1993
Inventors
John A. Hird
Lindsey D. Owen
Michael R. Rice
Assignee (at issue)
First City Texas-Dallas
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.