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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.:

US 4920297 B1

PDFFull Text
Date of Patent:
Apr. 24, 1990

Filed:

Dec. 21, 1988

Electric lamp

Applicant:
Inventors:

Johannes M van der Heijden, Eindhoven, NL;

Pierre L Derks, Eindhoven, NL;

Cornelis Penning, Oss, NL;

Assignee:

U.S. Philips Corporation, New York, NY (US);

Attorney:

Wieghaus; Brian J.

Primary Examiner:

Leo H Boudreau

Assistant Examiner:

Michael Razavi

Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313315 ; 313318 ; 315 57 ; 315 58 ;
Abstract

Electric lamp having a lamp envelope and a synthetic material lamp bowl which is secured to the lamp envelope and is provided with a lamp cap (7). The lamp envelope, on its side facing the lamp bowl, is provided with a plurality of projecting plate-shaped members extending substantially parallel to the lamp axis (A-B). The inner wall of the lamp bowl has ribs which also extend substantially parallel to the lamp axis. The plate shaped members engage the ribs to secure the lamp envelope to the lamp bowl.

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van der Heijden, Johannes. (1990). Electric lamp (U.S. Patent No. 4920297). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4920297

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