Granted Patent
Utility
US 6,301,212 · App. 09/668,658
Focusing and tracking servo circuit in an optical disk device
Inventors:
Mitsumasa Kubo, Yoshiyuki Otsuka
Patented Case
View Patent ↗
Granted: Oct 9, 2001
Filed: Sep 22, 2000
Inventors
Mitsumasa Kubo
Yoshiyuki Otsuka
Assignee (at issue)
TEAC 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.