GB657243A - Improvements in and relating to electric incandescent lamps - Google Patents

Improvements in and relating to electric incandescent lamps

Info

Publication number
GB657243A
GB657243A GB5713/49A GB571349A GB657243A GB 657243 A GB657243 A GB 657243A GB 5713/49 A GB5713/49 A GB 5713/49A GB 571349 A GB571349 A GB 571349A GB 657243 A GB657243 A GB 657243A
Authority
GB
United Kingdom
Prior art keywords
bulb
incandescent lamps
silvered
filament
electric incandescent
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
GB5713/49A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Philips Electronics 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, Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB657243A publication Critical patent/GB657243A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/40—Leading-in conductors

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
GB5713/49A 1948-03-05 1949-03-02 Improvements in and relating to electric incandescent lamps Expired GB657243A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL270680X 1948-03-05

Publications (1)

Publication Number Publication Date
GB657243A true GB657243A (en) 1951-09-12

Family

ID=19781918

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5713/49A Expired GB657243A (en) 1948-03-05 1949-03-02 Improvements in and relating to electric incandescent lamps

Country Status (7)

Country Link
US (1) US2488751A (forum.php)
BE (1) BE487695A (forum.php)
CH (1) CH270680A (forum.php)
DE (1) DE813278C (forum.php)
FR (1) FR982309A (forum.php)
GB (1) GB657243A (forum.php)
NL (1) NL69920C (forum.php)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2766394A (en) * 1955-02-18 1956-10-09 Darsie George Headlight
US5677983A (en) * 1995-01-11 1997-10-14 Nauchno-Proizvodstvennaya Firma "Adonis" Light beam heater with light source and reflector having two ellipsoidal sections and a truncated spherical surface there between

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2561033A (en) * 1950-12-02 1951-07-17 Odds Charles Headlight
US2692347A (en) * 1951-03-28 1954-10-19 Westinghouse Electric Corp Metalized stems for low-pressure discharge tubes
US2859368A (en) * 1951-10-20 1958-11-04 Sylvania Electric Prod Heat lamp
IT500078A (forum.php) * 1952-03-04
US2843778A (en) * 1952-12-22 1958-07-15 Gen Motors Corp Light bulb
US2818521A (en) * 1954-01-14 1957-12-31 Scarborough Associates Inc Lamp
NL127036C (forum.php) * 1959-06-02 1900-01-01
GB904469A (en) * 1960-02-11 1962-08-29 Thorn Electrical Ind Ltd Improvements in and relating to projection lamps
NL276950A (forum.php) * 1961-04-18
US4227113A (en) * 1978-10-18 1980-10-07 Duro-Test Corporation Incandescent electric lamp with partial light transmitting coating

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2766394A (en) * 1955-02-18 1956-10-09 Darsie George Headlight
US5677983A (en) * 1995-01-11 1997-10-14 Nauchno-Proizvodstvennaya Firma "Adonis" Light beam heater with light source and reflector having two ellipsoidal sections and a truncated spherical surface there between

Also Published As

Publication number Publication date
CH270680A (de) 1950-09-15
DE813278C (de) 1951-09-10
FR982309A (fr) 1951-06-08
BE487695A (forum.php)
US2488751A (en) 1949-11-22
NL69920C (forum.php)

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