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. 19, 1980
Filed:
Jan. 15, 1979
Applicant:
Inventors:
Ronald J Heffner, Greenbrook, NJ (US);
Russell Lee, Carteret, NJ (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V / ;
U.S. Cl.
CPC ...
362 20 ; 362183 ;
Abstract
An emergency light unit is disclosed in which a relay controlled low voltage bulb is initially responsive to line voltage and alternately responsive to battery voltage. A test switch is included to permit instant determination of line voltage and battery status.