FR766990A - New electric bulb for lamps and spotlights - Google Patents

New electric bulb for lamps and spotlights

Info

Publication number
FR766990A
FR766990A FR766990DA FR766990A FR 766990 A FR766990 A FR 766990A FR 766990D A FR766990D A FR 766990DA FR 766990 A FR766990 A FR 766990A
Authority
FR
France
Prior art keywords
spotlights
lamps
new electric
electric bulb
bulb
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
Other languages
French (fr)
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.)
LEO LEVY ETS
Original Assignee
LEO LEVY ETS
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 LEO LEVY ETS filed Critical LEO LEVY ETS
Application granted granted Critical
Publication of FR766990A publication Critical patent/FR766990A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL 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
    • C03C14/00—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix
    • C03C14/006—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix the non-glass component being in the form of microcrystallites, e.g. of optically or electrically active material
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL 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
    • C03C4/00—Compositions for glass with special properties
    • C03C4/02—Compositions for glass with special properties for coloured glass

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Glass Compositions (AREA)
FR766990D 1933-04-04 1933-04-04 New electric bulb for lamps and spotlights Expired FR766990A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR766990T 1933-04-04

Publications (1)

Publication Number Publication Date
FR766990A true FR766990A (en) 1934-07-07

Family

ID=9183616

Family Applications (1)

Application Number Title Priority Date Filing Date
FR766990D Expired FR766990A (en) 1933-04-04 1933-04-04 New electric bulb for lamps and spotlights

Country Status (3)

Country Link
FR (1) FR766990A (en)
GB (1) GB436221A (en)
NL (1) NL41691C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1115657B (en) * 1959-07-21 1961-10-19 Leonhard Braeuer Dipl Ing Anti-glare protection, especially for aircraft cockpits

Also Published As

Publication number Publication date
NL41691C (en)
GB436221A (en) 1935-10-03

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