Granted Patent
Utility
US 5,646,916 · App. 08/531,223
Track-lead-in control device for optical head
Inventor:
Hajime Kobayashi
Patented Case
View Patent ↗
Granted: Jul 8, 1997
Filed: Sep 19, 1995
Inventor
Hajime Kobayashi
Assignee (at issue)
NEC 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.