Granted Patent
Utility
US 5,131,027 · App. 07/536,204
Short time validity storage
Inventors:
John A. Hird, Lindsey D. Owen, Michael R. Rice
Patented Case
View Patent ↗
Granted: Jul 14, 1992
Filed: Jun 11, 1990
Inventors
John A. Hird
Lindsey D. Owen
Michael R. Rice
Assignee (at issue)
Intellicall, 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.