Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3145938A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbHfiledCriticalPatent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Priority to GB3145938ApriorityCriticalpatent/GB520461A/en
Publication of GB520461ApublicationCriticalpatent/GB520461A/en
H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
Landscapes
Vessels And Coating Films For Discharge Lamps
(AREA)
Abstract
520,461. Electric lamps with closed bulbs. GENERAL ELECTRIC CO., Ltd. (Patent-Treuhand Ges. Fur Elektrische Gluhlampen). Oct. 31, 1938, No. 31459. [Class 39 (ii)] [Also in Group XL] In order to provide protection for the sealing - off pip of an electric lamp, the moulded glass body 2 closing the tubular envelope 1 and carrying pins 6, 7 connected, in t h e arrangement shown. with a thermionic electrode has an inwardly recessed portion 8 from which the sealing-off pip 10 projects outwards to a point more or less flush with the exterior surface. The recess may be closed by a cap 11 cemented in place. Specifications 17622/98, [Class 39], 381,837, and 421,469, [Group XL], are referred to.
GB3145938A1938-10-311938-10-31Improvements in electric lamps having sealed envelopes
ExpiredGB520461A
(en)