Granted Patent
Utility
US 5,991,876 · App. 08/625,905
Electronic rights management and authorization system
Inventors:
Woodrow W. Johnson, Christine J. Atkins, Jon A. Yoh
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Apr 1, 1996
Inventors
Woodrow W. Johnson
Christine J. Atkins
Jon A. Yoh
Assignee (at issue)
COPYRIGHT CLEARANCE CENTER, 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.