Granted Patent
Utility
US 6,579,185 · App. 09/402,390
Portable electronic device and entertainment system
Inventors:
Toshio Honda, Hideyoshi Asai
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: Oct 6, 1999
Inventors
Toshio Honda
Hideyoshi Asai
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.