Granted Patent
Utility
US 6,207,942 · App. 09/286,107
Optical pickup device, error detection device, and detection method therefore
Inventor:
Minoru Ohyama
Patented Case
View Patent ↗
Granted: Mar 27, 2001
Filed: Apr 2, 1999
Inventor
Minoru Ohyama
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.