Granted Patent
Utility
US 5,189,653 · App. 07/568,874
Optical disk device eliminating offset of actuator and offset eliminating method used thereby
Inventor:
Shigenori Yanagi
Patented Case
View Patent ↗
Granted: Feb 23, 1993
Filed: Aug 17, 1990
Inventor
Shigenori Yanagi
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.