Granted Patent
Utility
US 5,717,938 · App. 08/491,311
Coded cartridges for electronic books
Inventors:
Robert L. Garthwaite, Sherri L. Meade
Patented Case
View Patent ↗
Granted: Feb 10, 1998
Filed: Jun 16, 1995
Inventors
Robert L. Garthwaite
Sherri L. Meade
Assignee (at issue)
Franklin Electronic Publishers, Incorporated
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.