Granted Patent
Utility
US 6,389,301 · App. 09/219,418
Portable radio information terminal apparatus, display screen operating method, recording medium, and microcomputer apparatus
Inventor:
Mami Furuya
Patented Case
View Patent ↗
Granted: May 14, 2002
Filed: Dec 23, 1998
Inventor
Mami Furuya
Assignee (at issue)
SONY GROUP CORPORATION
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.