Granted Patent
Utility
US 5,541,991 · App. 08/392,024
System for selectively preventing a software program from being operable
Inventors:
Lawrence Duffy Benson, III, Brian P. Gill, Timothy Earl Gill
Patented Case
View Patent ↗
Granted: Jul 30, 1996
Filed: Feb 21, 1995
Inventors
Lawrence Duffy Benson, III
Brian P. Gill
Timothy Earl Gill
Assignee (at issue)
Quark, 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.