GB681355A - Improvements in or relating to gas- and/or vapour-discharge lamps - Google Patents

Improvements in or relating to gas- and/or vapour-discharge lamps

Info

Publication number: GB681355A
Authority: GB; United Kingdom
Prior art keywords: conductive material; strip; discharge lamps; glaze; butanol
Prior art date: 1948-03-16
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

GB6740/49A

Other languages

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.)

Koninklijke Philips NV

Original Assignee

Philips Gloeilampenfabrieken NV

Philips Electronics NV

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.)

1948-03-16

Filing date

1949-03-11

Publication date

1952-10-22

1949-03-11 Application filed by Philips Gloeilampenfabrieken NV, Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV

1952-10-22 Publication of GB681355A publication Critical patent/GB681355A/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
- H01J61/545—Igniting arrangements, e.g. promoting ionisation for starting using an auxiliary electrode inside the vessel

Landscapes

Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Luminescent Compositions (AREA)
Vessels And Coating Films For Discharge Lamps (AREA)

GB6740/49A 1948-03-16 1949-03-11 Improvements in or relating to gas- and/or vapour-discharge lamps Expired GB681355A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL279459X		1948-03-16

Publications (1)

Publication Number	Publication Date
GB681355A true GB681355A (en)	1952-10-22

Family

ID=19782239

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB6740/49A Expired GB681355A (en)	1948-03-16	1949-03-11	Improvements in or relating to gas- and/or vapour-discharge lamps

Country Status (6)

Country	Link
BE (1)	BE487890A (xx)
CH (1)	CH279459A (xx)
DE (1)	DE813059C (xx)
FR (1)	FR983148A (xx)
GB (1)	GB681355A (xx)
NL (2)	NL72265C (xx)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE928188C (de) *	1951-10-13	1955-05-26	Philips Nv	Verfahren zur Herstellung eines ringfoermigen Entladungsgefaesses und nach diesem Verfahren hergestellte ringfoermige Entladungslampe
JPS5611358Y1 (xx) *	1978-08-08	1981-03-13

0
- NL NL666617280A patent/NL139415B/xx unknown
- BE BE487890D patent/BE487890A/xx unknown
- NL NL72265D patent/NL72265C/xx active
1949
- 1949-03-11 GB GB6740/49A patent/GB681355A/en not_active Expired
- 1949-03-14 CH CH279459D patent/CH279459A/de unknown
- 1949-03-14 FR FR983148D patent/FR983148A/fr not_active Expired
- 1949-03-15 DE DEP36801D patent/DE813059C/de not_active Expired

Also Published As

Publication number	Publication date
BE487890A (xx)
FR983148A (fr)	1951-06-19
NL72265C (xx)
CH279459A (de)	1951-11-30
NL139415B (nl)
DE813059C (de)	1951-09-06

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