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. 15, 1989
Filed:
Mar. 31, 1986
Applicant:
Inventor:
Robert M Griffin, South Hamilton, MA (US);
Assignee:
GTE Products Corporation, Danvers, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01K / ; H01K / ;
U.S. Cl.
CPC ...
313557 ; 313559 ; 313579 ;
Abstract
A tungsten-halogen lamp achieves long life in any burning orientation by the inclusion within the lamp of copper, which reduces filament sag and filament corrosion.