Granted Patent
Utility
US 5,017,776 · App. 07/448,037
Apparatus for and methods of optical encoding having spiral shaped light modulator
Inventor:
Victor D. Loewen
Patented Case
View Patent ↗
Granted: May 21, 1991
Filed: Dec 8, 1989
Inventor
Victor D. Loewen
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.