IP Library › Granted Patent US 4,904,861
Granted Patent Utility
US 4,904,861 · App. 07/290,542

Optical encoder using sufficient inactive photodetectors to make leakage current equal throughout

Inventors: Howard C. Epstein, Thomas J. Lugaresi, Michael A. Robinson
Patented Case View Patent ↗
Granted: Feb 27, 1990 Filed: Dec 27, 1988
Inventors
Howard C. Epstein
Thomas J. Lugaresi
Michael A. Robinson
Assignee (at issue)
Hewlett-Packard Company, L.P.

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Quick Facts
Patent No.
US 4,904,861
App. No.
07/290,542
Filed
1988-12-27
Granted
1990-02-27
Kind
A