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:
Oct. 11, 1988
Filed:
Feb. 10, 1982
Applicant:
Inventors:
Assignee:
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ; H01J / ;
U.S. Cl.
CPC ...
313 54 ; 313D / ;
Abstract
A high pressure metal vapor discharge lamp comprising a discharge tube with a pair of spaced main electrodes; a filling sealed in the discharge tube comprising a light emitting metal and a starting gas; a radioactive source comprising a radioactive substance entirely covered with an envelope of non-radioactive, heat- and corrosion-resistant material sealed inside the discharge tube, an outer tube enclosing the discharge tube, and circuit means for starting the discharge tube.