Granted Patent
Utility
US 5,148,534 · App. 07/680,798
Hardware cartridge representing verifiable, use-once authorization
Inventor:
Laim D. Comerford
Patented Case
View Patent ↗
Granted: Sep 15, 1992
Filed: Apr 3, 1991
Inventor
Laim D. Comerford
Assignee (at issue)
International Business Machines Corporation
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.