Granted Patent
Utility
US 6,369,963 · App. 09/611,273
Optical pickup apparatus
Inventors:
Tohru Hotta, Ikuo Kasuga, Katsushige Yanagisawa
Patented Case
View Patent ↗
Granted: Apr 9, 2002
Filed: Jul 6, 2000
Inventors
Tohru Hotta
Ikuo Kasuga
Katsushige Yanagisawa
Assignee (at issue)
Sankyo Seiki Mfg. Co., 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.