FR2214969B1 - - Google Patents

Info

Publication number
FR2214969B1
FR2214969B1 FR7401912A FR7401912A FR2214969B1 FR 2214969 B1 FR2214969 B1 FR 2214969B1 FR 7401912 A FR7401912 A FR 7401912A FR 7401912 A FR7401912 A FR 7401912A FR 2214969 B1 FR2214969 B1 FR 2214969B1
Authority
FR
France
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
FR7401912A
Other languages
French (fr)
Other versions
FR2214969A1 (en
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.)
Thorn Lighting Ltd
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 FR2214969A1 publication Critical patent/FR2214969A1/fr
Application granted granted Critical
Publication of FR2214969B1 publication Critical patent/FR2214969B1/fr
Expired legal-status Critical Current

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)
FR7401912A 1973-01-19 1974-01-21 Expired FR2214969B1 (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
FR2214969A1 FR2214969A1 (en) 1974-08-19
FR2214969B1 true FR2214969B1 (en) 1977-06-10

Family

ID=9749149

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7401912A Expired FR2214969B1 (en) 1973-01-19 1974-01-21

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
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
DK140963C (en) 1980-05-27
IT1003464B (en) 1976-06-10

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Legal Events

Date Code Title Description
ST Notification of lapse