Granted Patent
Utility
US 5,097,455 · App. 07/475,628
Enhanced focus sending in optical information storage systems
Inventor:
Daniel Richard Marshall
Patented Case
View Patent ↗
Granted: Mar 17, 1992
Filed: Feb 6, 1990
Inventor
Daniel Richard Marshall
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.