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. 27, 1979
Filed:
May. 23, 1977
Applicant:
Inventors:
Petrus C Lauwerijssen, Eindhoven, NL;
Antonius J Van Meer, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ; H01J / ;
U.S. Cl.
CPC ...
313485 ; 313204 ; 313490 ; 313493 ;
Abstract
A low-pressure gas discharge lamp having an inner tube in the discharge space limited by a lamp envelope the outer wall of which inner tube is provided with a luminescent coating, the portion which is provided with this luminescent coating facing away from the portion of the inner tube which is nearest to the wall of the lamp envelope.