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. 22, 1987
Filed:
Apr. 21, 1986
Applicant:
Inventor:
Irving S Goldstein, Teaneck, NJ (US);
Assignee:
Duro-test Corporation, North Bergen, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01K / ; H01K / ;
U.S. Cl.
CPC ...
313112 ; 313114 ; 313634 ;
Abstract
An incandescent electric lamp includes an envelope with a wall having an inner and an outer curved surfaces. An incandescent filament is located within the envelope. A device is provided to connect the incandescent filament to a source of electrical power to cause it to incandesce. The curved inner surface of the envelope is defined by a plurality of interconnecting, substantially flat chord surfaces interposed to each other at an angle.