GB211453A - Improvements in or relating to gasfilled electric lamps - Google Patents

Improvements in or relating to gasfilled electric lamps

Info

Publication number
GB211453A
GB211453A GB1663/24A GB166324A GB211453A GB 211453 A GB211453 A GB 211453A GB 1663/24 A GB1663/24 A GB 1663/24A GB 166324 A GB166324 A GB 166324A GB 211453 A GB211453 A GB 211453A
Authority
GB
United Kingdom
Prior art keywords
relating
electric lamps
bulb
blue
light
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
GB1663/24A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB211453A publication Critical patent/GB211453A/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

Landscapes

  • Discharge Lamp (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

211,453. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. Feb. 14, 1923, [Convention date]. Drawings to Specification. Bulbs.-A gas-filled electric lamp is provided with a bulb of light-diffusing glass which absorbs the blue and violet rays emitted by the filament. The bulb may comprise inner and outer layers of glass, the outer being light-diffusing and the inner absorbing the blue and violet rays.
GB1663/24A 1923-02-14 1924-01-21 Improvements in or relating to gasfilled electric lamps Expired GB211453A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL211453X 1923-02-14

Publications (1)

Publication Number Publication Date
GB211453A true GB211453A (en) 1924-11-27

Family

ID=19778847

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1663/24A Expired GB211453A (en) 1923-02-14 1924-01-21 Improvements in or relating to gasfilled electric lamps

Country Status (3)

Country Link
DE (1) DE413293C (en)
FR (1) FR576015A (en)
GB (1) GB211453A (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
DE413293C (en) 1925-05-05
FR576015A (en) 1924-08-09

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