GB493831A - Improvements in or relating to devices comprising an electric high-pressure metal-vapour discharge tube - Google Patents

Improvements in or relating to devices comprising an electric high-pressure metal-vapour discharge tube

Info

Publication number
GB493831A
GB493831A GB16414/38A GB1641438A GB493831A GB 493831 A GB493831 A GB 493831A GB 16414/38 A GB16414/38 A GB 16414/38A GB 1641438 A GB1641438 A GB 1641438A GB 493831 A GB493831 A GB 493831A
Authority
GB
United Kingdom
Prior art keywords
resistance
discharge tube
filament
pressure metal
june
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
GB16414/38A
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
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 GB493831A publication Critical patent/GB493831A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/96—Lamps with light-emitting discharge path and separately-heated incandescent body within a common envelope, e.g. for simulating daylight

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)
GB16414/38A 1937-06-04 1938-06-01 Improvements in or relating to devices comprising an electric high-pressure metal-vapour discharge tube Expired GB493831A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE493831X 1937-06-04

Publications (1)

Publication Number Publication Date
GB493831A true GB493831A (en) 1938-10-14

Family

ID=6544628

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16414/38A Expired GB493831A (en) 1937-06-04 1938-06-01 Improvements in or relating to devices comprising an electric high-pressure metal-vapour discharge tube

Country Status (3)

Country Link
BE (1) BE428407A (US20110009641A1-20110113-C00116.png)
FR (1) FR49538E (US20110009641A1-20110113-C00116.png)
GB (1) GB493831A (US20110009641A1-20110113-C00116.png)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2669676A (en) * 1951-01-31 1954-02-16 Buser Johann Electric lamp for mixed light

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2669676A (en) * 1951-01-31 1954-02-16 Buser Johann Electric lamp for mixed light

Also Published As

Publication number Publication date
BE428407A (US20110009641A1-20110113-C00116.png)
FR49538E (fr) 1939-05-01

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