Granted Patent
Utility
US 4,931,889 · App. 07/200,051
Method and apparatus depending on the selected power source for controlling the positioning of a recording/reproducing apparatus
Inventor:
Koji Osafune
Patented Case
View Patent ↗
Granted: Jun 5, 1990
Filed: May 27, 1988
Inventor
Koji Osafune
Assignee (at issue)
Kabushiki Kaisha Toshiba
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.