FR845726A - New selective and anti-scattering electric bulb for lamps and projectors - Google Patents

New selective and anti-scattering electric bulb for lamps and projectors

Info

Publication number
FR845726A
FR845726A FR845726DA FR845726A FR 845726 A FR845726 A FR 845726A FR 845726D A FR845726D A FR 845726DA FR 845726 A FR845726 A FR 845726A
Authority
FR
France
Prior art keywords
projectors
lamps
electric bulb
new selective
scattering electric
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.)
Jerome & Bonnefoy & Cie
Original Assignee
Jerome & Bonnefoy & Cie
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 Jerome & Bonnefoy & Cie filed Critical Jerome & Bonnefoy & Cie
Application granted granted Critical
Publication of FR845726A publication Critical patent/FR845726A/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
    • C03C4/00—Compositions for glass with special properties
    • 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
    • C03C4/08—Compositions for glass with special properties for glass selectively absorbing radiation of specified wave lengths
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels

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)
FR845726D 1938-04-30 1938-04-30 New selective and anti-scattering electric bulb for lamps and projectors Expired FR845726A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR845726T 1938-04-30

Publications (1)

Publication Number Publication Date
FR845726A true FR845726A (en) 1939-08-31

Family

ID=9312957

Family Applications (1)

Application Number Title Priority Date Filing Date
FR845726D Expired FR845726A (en) 1938-04-30 1938-04-30 New selective and anti-scattering electric bulb for lamps and projectors

Country Status (1)

Country Link
FR (1) FR845726A (en)

Cited By (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

Cited By (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

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