Granted Patent
Utility
US 5,473,587 · App. 08/311,445
Track retrieval system for optical disk
Inventors:
Shingo Hamaguchi, Yasuyuki Ozawa
Patented Case
View Patent ↗
Granted: Dec 5, 1995
Filed: Sep 23, 1994
Inventors
Shingo Hamaguchi
Yasuyuki Ozawa
Assignee (at issue)
Fujitsu Limited
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.