Granted Patent
Utility
US 6,621,182 · App. 09/797,425
Entertainment device and method of operation thereof
Inventor:
Toru Akazawa
Patented Case
View Patent ↗
Granted: Sep 16, 2003
Filed: Mar 1, 2001
Inventor
Toru Akazawa
Assignee (at issue)
SONY COMPUTER ENTERTAINMENT INC.
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.