Granted Patent
Utility
US 6,226,501 · App. 09/087,559
Radiotelephone having a primary keypad and a movable flip cover that contains a secondary keypad
Inventors:
Mark W. Weadon, William H. Jennings, Samuel Kenneth Turner
Patented Case
View Patent ↗
Granted: May 1, 2001
Filed: May 29, 1998
Inventors
Mark W. Weadon
William H. Jennings
Samuel Kenneth Turner
Assignee (at issue)
ERICSSON GMBH
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.