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:
Dec. 29, 1981
Filed:
Mar. 24, 1980
Applicant:
Inventors:
William M Keeffe, Rockport, MA (US);
Harold L Rothwell, Jr, Rowley, MA (US);
George J English, Reading, MA (US);
W Calvin Gungle, Danvers, MA (US);
Assignee:
GTE Products Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ; H01J / ;
U.S. Cl.
CPC ...
313214 ; 313185 ; 313223 ; 313229 ;
Abstract
A single ended, short arc, low wattage, high pressure, metal vapor discharge lamp is electrode stabilized and employs arc constrictors selected from the group of lanthanides, actinides and thorium to provide a brightness of 175,000 cd/in.sup.2 when operated at 75 watts.