Granted Patent
Utility
US 5,648,947 · App. 08/410,340
Optical disk device having track jumping control
Inventors:
Shingo Hamaguchi, Eiji Yabuki
Patented Case
View Patent ↗
Granted: Jul 15, 1997
Filed: Mar 24, 1995
Inventors
Shingo Hamaguchi
Eiji Yabuki
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.