ZA74275B - Improved incandescent lamp - Google Patents

Improved incandescent lamp

Info

Publication number: ZA74275B
Authority: ZA; South Africa
Prior art keywords: incandescent lamp; improved incandescent; improved; lamp; incandescent
Prior art date: 1973-01-19

Application number

ZA00740275A

Inventor

J Coaton

S Cole

J Rees

D Mason

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.)

1973-01-19

Filing date

1974-01-15

Publication date

1975-05-28

1974-01-15 Application filed by Thorn Lighting Ltd filed Critical Thorn Lighting Ltd

1975-05-28 Publication of ZA74275B publication Critical patent/ZA74275B/en

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/28—Envelopes; Vessels
- H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof

Landscapes

Engineering & Computer Science (AREA)
Manufacturing & Machinery (AREA)
Pigments, Carbon Blacks, Or Wood Stains (AREA)
Paper (AREA)
Vessels And Coating Films For Discharge Lamps (AREA)
Chemically Coating (AREA)
Chemical Treatment Of Metals (AREA)

ZA00740275A 1973-01-19 1974-01-15 Improved incandescent lamp ZA74275B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB295273A GB1456242A (en)	1973-01-19	1973-01-19	Incandescent lamp

Publications (1)

Publication Number	Publication Date
ZA74275B true ZA74275B (en)	1975-05-28

Family

ID=9749149

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ZA00740275A ZA74275B (en)	1973-01-19	1974-01-15	Improved incandescent lamp

Country Status (14)

Country	Link
US (1)	US3902091A (en)
JP (1)	JPS5818744B2 (en)
BE (1)	BE809912A (en)
CA (1)	CA986980A (en)
DE (1)	DE2402136C3 (en)
DK (1)	DK140963B (en)
FR (1)	FR2214969B1 (en)
GB (1)	GB1456242A (en)
IE (1)	IE38743B1 (en)
IT (1)	IT1003464B (en)
LU (1)	LU69186A1 (en)
NL (1)	NL177538C (en)
SE (1)	SE391836B (en)
ZA (1)	ZA74275B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3982046A (en) *	1973-01-19	1976-09-21	Thorn Lighting Limited	Incandescent lamps
US4256988A (en) *	1977-01-17	1981-03-17	Thorn Lighting Limited	Incandescent halogen lamp with protective envelope coating
US4185922A (en) *	1977-01-17	1980-01-29	Thorn Electrical Industries Limited	Method of introducing fluorine into a lamp
US4288713A (en) *	1979-11-23	1981-09-08	Gte Products Corporation	Lamp having opaque coating
US5473226A (en) *	1993-11-16	1995-12-05	Osram Sylvania Inc.	Incandescent lamp having hardglass envelope with internal barrier layer
DE4410968A1 (en) *	1994-03-29	1995-10-05	Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh	High pressure mercury lamp

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL37602C (en) *	1931-12-18	1936-03-16
US2393469A (en) *	1942-08-03	1946-01-22	Corning Glass Works	Fluorescent glass and lamp made therefrom

1973
- 1973-01-19 GB GB295273A patent/GB1456242A/en not_active Expired
1974
- 1974-01-14 IE IE78/74A patent/IE38743B1/en unknown
- 1974-01-15 CA CA190,139A patent/CA986980A/en not_active Expired
- 1974-01-15 ZA ZA00740275A patent/ZA74275B/en unknown
- 1974-01-17 DE DE2402136A patent/DE2402136C3/en not_active Expired
- 1974-01-17 LU LU69186A patent/LU69186A1/xx unknown
- 1974-01-17 SE SE7400620A patent/SE391836B/en unknown
- 1974-01-17 DK DK24674AA patent/DK140963B/en not_active Application Discontinuation
- 1974-01-18 US US434381A patent/US3902091A/en not_active Expired - Lifetime
- 1974-01-18 BE BE139957A patent/BE809912A/en unknown
- 1974-01-19 JP JP49008913A patent/JPS5818744B2/en not_active Expired
- 1974-01-21 IT IT19617/74A patent/IT1003464B/en active
- 1974-01-21 FR FR7401912A patent/FR2214969B1/fr not_active Expired
- 1974-01-21 NL NLAANVRAGE7400812,A patent/NL177538C/en not_active IP Right Cessation

Also Published As

Publication number	Publication date
JPS5818744B2 (en)	1983-04-14
DK140963B (en)	1979-12-10
SE391836B (en)	1977-02-28
DE2402136A1 (en)	1974-07-25
NL177538C (en)	1985-10-01
DK140963C (en)	1980-05-27
FR2214969A1 (en)	1974-08-19
IT1003464B (en)	1976-06-10
GB1456242A (en)	1976-11-24
DE2402136C3 (en)	1978-12-07
JPS49104482A (en)	1974-10-03
BE809912A (en)	1974-05-16
AU6468174A (en)	1975-07-24
IE38743B1 (en)	1978-03-29
IE38743L (en)	1974-07-19
US3902091A (en)	1975-08-26
DE2402136B2 (en)	1978-04-13
NL177538B (en)	1985-05-01
FR2214969B1 (en)	1977-06-10
NL7400812A (en)	1974-07-23
LU69186A1 (en)	1974-04-08
CA986980A (en)	1976-04-06

Publication	Publication Date	Title
GB1406199A (en)	1975-09-17	Lighting fixtures
AU7212874A (en)	1976-02-12	Luminaire
CA999913A (en)	1976-11-16	Tungsten-halogen lamp
JPS5222388A (en)	1977-02-19	Tungstennbromine incandescent lamp
AU7672574A (en)	1976-06-24	Lamp assembly
JPS5264178A (en)	1977-05-27	Incandescent lamp
AU7353274A (en)	1976-03-25	Lamp reflectors
YU36773B (en)	1984-08-31	Lighting cupola
AU7733675A (en)	1976-07-15	Lamp assembly
CA985730A (en)	1976-03-16	Tungsten-halogen lamp
AU7361674A (en)	1976-04-01	Lamp unit
AU461694B2 (en)	1975-06-05	Fluorescent lamp
ZA74275B (en)	1975-05-28	Improved incandescent lamp
JPS522085A (en)	1977-01-08	Refeector type incandescent lamp
GB1348949A (en)	1974-03-27	Electric filament lamp
AU7492674A (en)	1976-05-06	Lamp reflectors
AU7627374A (en)	1976-06-17	Tubular lamp envelope
AU6962874A (en)	1975-12-04	Discharge lamp
AU7166774A (en)	1976-01-29	Lamp
IL42561A0 (en)	1973-08-29	Lamp
CA996625A (en)	1976-09-07	Incandescent lamp
AU484239B2 (en)	1975-07-24	Improved incandescent lamp
GB1344948A (en)	1974-01-23	Electric filament lamp
CA36614S (en)	1973-05-23	Lamp
CA985359A (en)	1976-03-09	Electric incandescent lamps