Granted Patent
Utility
US 5,818,809 · App. 08/824,846
Optical system for recording and/or reproducing an optical information recording medium
Inventors:
Norikazu Arai, Masaya Kobayashi
Patented Case
View Patent ↗
Granted: Oct 6, 1998
Filed: Mar 26, 1997
Inventors
Norikazu Arai
Masaya Kobayashi
Assignee (at issue)
Konica 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.