GB271481A - - Google Patents

Info

Publication number
GB271481A
GB271481A GB13372/27A GB1337227A GB271481A GB 271481 A GB271481 A GB 271481A GB 13372/27 A GB13372/27 A GB 13372/27A GB 1337227 A GB1337227 A GB 1337227A GB 271481 A GB271481 A GB 271481A
Authority
GB
United Kingdom
Prior art keywords
dewey
assignees
spencer
tinted
houston
Prior art date
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
GB13372/27A
Other languages
English (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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB271481A publication Critical patent/GB271481A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C1/00Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
    • C03C1/10Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels to produce uniformly-coloured transparent products
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01KELECTRIC INCANDESCENT LAMPS
    • H01K1/00Details
    • H01K1/28Envelopes; Vessels
    • H01K1/32Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Lighters Containing Fuel (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
GB13372/27A 1926-05-18 1927-05-18 Expired GB271481A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US271481TA 1926-05-18 1926-05-18

Publications (1)

Publication Number Publication Date
GB271481A true GB271481A (fr) 1927-10-06

Family

ID=31945628

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13372/27A Expired GB271481A (fr) 1926-05-18 1927-05-18

Country Status (2)

Country Link
FR (1) FR634384A (fr)
GB (1) GB271481A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4288713A (en) * 1979-11-23 1981-09-08 Gte Products Corporation Lamp having opaque coating

Also Published As

Publication number Publication date
FR634384A (fr) 1928-02-16

Similar Documents

Publication Publication Date Title
GB433033A (en) Improvements in and relating to electric incandescent lamps
GB271481A (fr)
GB299780A (en) Improvements in or relating to electric incandescent lamps or similar articles
GB353973A (en) Improvements in and relating to bases for electric incandescent lamps and similar devices
GB224894A (en) Improvements in and relating to incandescent lamps and similar devices
CA306284A (fr) Filament de lampe incandescente
GB263009A (en) Illuminating means
GB246516A (en) Improvements in and relating to electric incandescent lamps
GB252381A (en) Improvements in and relating to electric lamps
CA300361A (fr) Filament de lampe incandescente
GB247148A (en) Improvements in electric incandescent lamps
GB312613A (en) Improvements in and relating to incandescent electric lamps
CA291752A (fr) Monture de lampe a filament incandescent
GB427111A (en) Improvements in and relating to illuminating systems comprising metal vapour electric discharge lamps combined with incandescent lamps
GB459495A (en) Improvements in electric lamp bulbs for motor car headlights and the like
CA305853A (fr) Lampe incandescente et sa monture
GB239221A (en) Improvements in and relating to electric incandescent devices
GB288152A (en) Shades for incandescent electric lamps
GB560368A (en) Improvements in and relating to flash lamps
CA229673A (fr) Lampe incandescente a deux filaments
CA229387A (fr) Ampoule incandescente a deux filaments
GB276625A (en) Improvements relating to light signals
CA297599A (fr) Element de lampe incandescente
CA223518A (fr) Lampe incandescente sans pointe
CA297598A (fr) Lampe incandescente