Granted Patent
Utility
US 6,269,072 · App. 09/640,004
Optical disc
Inventor:
Takashi Ohgo
Patented Case
View Patent ↗
Granted: Jul 31, 2001
Filed: Aug 17, 2000
Inventor
Takashi Ohgo
Assignee (at issue)
Victor Company of Japan, Ltd.
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.