CH537642A - Incandescent electric lamp - Google Patents

Incandescent electric lamp

Info

Publication number: CH537642A
Authority: CH; Switzerland
Prior art keywords: electric lamp; incandescent electric; incandescent; lamp; electric
Prior art date: 1969-01-21

Application number

CH1516771A

Other languages

French (fr)

Inventor

Bernard Johnston Robert

Michael Rees John

Original Assignee

Thorn Lighting Ltd

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.)

1969-01-21

Filing date

1969-12-18

Publication date

1973-07-13

1969-12-18 Application filed by Thorn Lighting Ltd filed Critical Thorn Lighting Ltd

1973-07-13 Publication of CH537642A publication Critical patent/CH537642A/en

Links

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/52—Means for obtaining or maintaining the desired pressure within the vessel
- H01K1/54—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering
- H01K1/56—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering characterised by the material of the getter

CH1516771A 1969-01-21 1969-12-18 Incandescent electric lamp CH537642A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB338469A GB1236174A (en)	1969-01-21	1969-01-21	Improvements in electric incandescent lamps

Publications (1)

Publication Number	Publication Date
CH537642A true CH537642A (en)	1973-07-13

Family

ID=9757318

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
CH1887669A CH515610A (en)	1969-01-21	1969-12-18	Incandescent electric lamp and process for its manufacture
CH1516771A CH537642A (en)	1969-01-21	1969-12-18	Incandescent electric lamp

Family Applications Before (1)

Application Number	Title	Priority Date	Filing Date
CH1887669A CH515610A (en)	1969-01-21	1969-12-18	Incandescent electric lamp and process for its manufacture

Country Status (8)

Country	Link
AT (1)	AT296425B (en)
BE (1)	BE742908A (en)
CH (2)	CH515610A (en)
DE (1)	DE2001978C3 (en)
FR (1)	FR2028773A1 (en)
GB (1)	GB1236174A (en)
NL (1)	NL159812B (en)
SE (1)	SE368113B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB8302494D0 (en) *	1983-01-29	1983-03-02	Emi Plc Thorn	Tungsten halogen incandescent lamps

1969
- 1969-01-21 GB GB338469A patent/GB1236174A/en not_active Expired
- 1969-11-28 NL NL6917901A patent/NL159812B/en not_active IP Right Cessation
- 1969-12-10 BE BE742908D patent/BE742908A/xx unknown
- 1969-12-18 CH CH1887669A patent/CH515610A/en not_active IP Right Cessation
- 1969-12-18 CH CH1516771A patent/CH537642A/en not_active IP Right Cessation
- 1969-12-19 AT AT1184769A patent/AT296425B/en not_active IP Right Cessation
1970
- 1970-01-12 SE SE30670A patent/SE368113B/xx unknown
- 1970-01-15 FR FR7001418A patent/FR2028773A1/fr not_active Withdrawn
- 1970-01-17 DE DE19702001978 patent/DE2001978C3/en not_active Expired

Also Published As

Publication number	Publication date
BE742908A (en)	1970-05-14
GB1236174A (en)	1971-06-23
CH515610A (en)	1971-11-15
DE2001978B2 (en)	1973-10-25
AT296425B (en)	1972-02-10
FR2028773A1 (en)	1970-10-16
DE2001978A1 (en)	1970-09-10
NL6917901A (en)	1970-07-23
SE368113B (en)	1974-06-17
NL159812B (en)	1979-03-15
DE2001978C3 (en)	1974-05-16

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Legal Events

Date	Code	Title	Description
1982-08-31	PL	Patent ceased