Granted Patent
Utility
US 5,043,721 · App. 07/454,662
Paging accessory for portable information/computing devices
Inventor:
Gregory J. May
Patented Case
View Patent ↗
Granted: Aug 27, 1991
Filed: Dec 18, 1989
Inventor
Gregory J. May
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.