GB420841A - Improvements in electric incandescent lamps - Google Patents

Improvements in electric incandescent lamps

Info

Publication number
GB420841A
GB420841A GB18372/33A GB1837233A GB420841A GB 420841 A GB420841 A GB 420841A GB 18372/33 A GB18372/33 A GB 18372/33A GB 1837233 A GB1837233 A GB 1837233A GB 420841 A GB420841 A GB 420841A
Authority
GB
United Kingdom
Prior art keywords
electric incandescent
silvering
class
incandescent lamps
incandescent lamp
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
GB18372/33A
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.)
LUDOVICUS FRANCISCUS DE BACKER
Original Assignee
LUDOVICUS FRANCISCUS DE BACKER
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 LUDOVICUS FRANCISCUS DE BACKER filed Critical LUDOVICUS FRANCISCUS DE BACKER
Publication of GB420841A publication Critical patent/GB420841A/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
    • H01K1/325—Reflecting coating

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

420,841. Electric incandescent lamp bulbs. BACKER, L. F. DE, 69, Zennelaan, Vilvoorde, Belgium. June 28, 1933, No. 18372. Convention date, Feb. 2. [Class 39 (ii)] In an electric incandescent lamp comprising a bulb and a neck made of transparent glass a reflecting layer of silver is applied on the inner wall over an annular portion close to the neck. The inner silvering may be applied upon facets, flutings, corrugations or the like, which may be formed by moulding or grinding either inside or on both sides of the glass bulb. The silvering may be applied in known manner. Specification 161,768, [Class 39 (ii)], is referred to.
GB18372/33A 1933-02-02 1933-06-28 Improvements in electric incandescent lamps Expired GB420841A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE420841X 1933-02-02

Publications (1)

Publication Number Publication Date
GB420841A true GB420841A (en) 1934-12-10

Family

ID=3869366

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18372/33A Expired GB420841A (en) 1933-02-02 1933-06-28 Improvements in electric incandescent lamps

Country Status (2)

Country Link
BE (1) BE394093A (en)
GB (1) GB420841A (en)

Also Published As

Publication number Publication date
BE394093A (en)

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