DK140963C - - Google Patents

Info

Publication number
DK140963C
DK140963C DK24674A DK24674A DK140963C DK 140963 C DK140963 C DK 140963C DK 24674 A DK24674 A DK 24674A DK 24674 A DK24674 A DK 24674A DK 140963 C DK140963 C DK 140963C
Authority
DK
Denmark
Application number
DK24674A
Other languages
Danish (da)
Other versions
DK140963B (en
Inventor
D R Mason
S M Cole
J M Rees
J R Coaton
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.)
Filing date
Publication date
Application filed by Thorn Lighting Ltd filed Critical Thorn Lighting Ltd
Publication of DK140963B publication Critical patent/DK140963B/en
Application granted granted Critical
Publication of DK140963C publication Critical patent/DK140963C/da

Links

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)
  • Chemical Treatment Of Metals (AREA)
  • Chemically Coating (AREA)
DK24674AA 1973-01-19 1974-01-17 Electric tungsten halogen lamp with a protective coating on the inner surfaces and method of manufacturing the coating. DK140963B (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
DK140963B DK140963B (en) 1979-12-10
DK140963C true DK140963C (en) 1980-05-27

Family

ID=9749149

Family Applications (1)

Application Number Title Priority Date Filing Date
DK24674AA DK140963B (en) 1973-01-19 1974-01-17 Electric tungsten halogen lamp with a protective coating on the inner surfaces and method of manufacturing the coating.

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
US4185922A (en) * 1977-01-17 1980-01-29 Thorn Electrical Industries Limited Method of introducing fluorine into a lamp
US4256988A (en) * 1977-01-17 1981-03-17 Thorn Lighting Limited Incandescent halogen lamp with protective envelope coating
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

Also Published As

Publication number Publication date
SE391836B (en) 1977-02-28
AU6468174A (en) 1975-07-24
DE2402136B2 (en) 1978-04-13
IE38743L (en) 1974-07-19
ZA74275B (en) 1975-05-28
FR2214969B1 (en) 1977-06-10
DK140963B (en) 1979-12-10
NL177538B (en) 1985-05-01
FR2214969A1 (en) 1974-08-19
LU69186A1 (en) 1974-04-08
IE38743B1 (en) 1978-03-29
CA986980A (en) 1976-04-06
JPS5818744B2 (en) 1983-04-14
NL177538C (en) 1985-10-01
NL7400812A (en) 1974-07-23
DE2402136A1 (en) 1974-07-25
BE809912A (en) 1974-05-16
US3902091A (en) 1975-08-26
JPS49104482A (en) 1974-10-03
DE2402136C3 (en) 1978-12-07
GB1456242A (en) 1976-11-24
IT1003464B (en) 1976-06-10

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Legal Events

Date Code Title Description
AHB Application shelved due to non-payment