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:
Feb. 24, 1976
Filed:
Mar. 19, 1975
Eduard Jozef Janssen, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
The invention relates to an electric incandescent lamp having a tubular envelope in which a coiled-coil filament is stretched which is supported in at least one place between the ends by a support formed from wire, of which support a part bears on the inner wall of the envelope and another part supports the filament, The part which supports the filament has a helical shape and, according to the invention, is present inside the secondary winding of the filament. The said part comprises at least two turns the winding sense of which corresponds to that of the secondary turns of the filament.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile