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:
Nov. 08, 1983
Filed:
Jun. 10, 1981
Victor R Notelteirs, Eindhoven, NL;
Stephanus J Claessens, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
In an electric incandescent lamp having a tungsten filament with a number of light-emissive sections (5, 7) connected by a non-light-emissive conductor, complicated constructions are often used so that said non-light-emissive conductor dissipates little energy. In such an incandescent lamp according to the invention the non-light-emissive conductor consists of a piece (9) of the tungsten wire (1) from which the light-emissive sections (5, 7) have been wound helically and around which a wire (2) of a less noble metal than tungsten is wound. The lamp may be used as a copying lamp. FIG. 1e.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile