The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 30, 1977
Filed:
Oct. 28, 1975
Applicant:
Inventor:
Fred William Erickson, Woodland Hills, CA (US);
Assignee:
Litton Systems, Inc., Beverly Hills, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02V / ;
U.S. Cl.
CPC ...
307157 ; 3151 / ;
Abstract
A constant current drive circuit that can be driven directly from the output of a shift register which can find use, for example, in maintaining a constant current through a controlled device such as one or more light emitting diodes (LEDs) to ensure uniform brightness throughout a display surface that includes a plurality of LEDs.
Erickson, Fred. (1977). Drive circuit with constant current (U.S. Patent No. 4045683). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4045683
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile