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:
Apr. 06, 1982
Filed:
May. 09, 1980
Applicant:
Inventors:
William D Wood, Del Mar, CA (US);
Kenneth L Davidson, San Diego, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
340764 ; 340373 ; 340813 ;
Abstract
A circuit to drive electromagnetically actuated displays. The circuit maintains a precise current level regardless of variations in supply voltage and drive coil resistance. The inductance of the drive coil is utilized to increase the efficiency of the current control.
Wood, William. (1982). Circuit for driving electromagnetically-actuated displays (U.S. Patent No. 4323894). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4323894
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile