Granted Patent
Utility
US 6,792,450 · App. 09/288,977
Information providing method and communication terminal apparatus
Inventor:
Ryoji Wakatsuki
Patented Case
View Patent ↗
Granted: Sep 14, 2004
Filed: Apr 9, 1999
Inventor
Ryoji Wakatsuki
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.