Granted Patent
Utility
US 5,930,221 · App. 08/959,370
Optical storage device made thinner by substituting electrical means for capabilities of sensors
Inventor:
Hiroshi Kumita
Patented Case
View Patent ↗
Granted: Jul 27, 1999
Filed: Oct 28, 1997
Inventor
Hiroshi Kumita
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.