FR720828A - Improvements to incandescent electric lamps and discharge tubes - Google Patents

Improvements to incandescent electric lamps and discharge tubes

Info

Publication number
FR720828A
FR720828A FR720828DA FR720828A FR 720828 A FR720828 A FR 720828A FR 720828D A FR720828D A FR 720828DA FR 720828 A FR720828 A FR 720828A
Authority
FR
France
Prior art keywords
discharge tubes
electric lamps
incandescent electric
incandescent
lamps
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.)
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
Application granted granted Critical
Publication of FR720828A publication Critical patent/FR720828A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01KELECTRIC INCANDESCENT LAMPS
    • H01K1/00Details
    • H01K1/42Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp
    • H01K1/46Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp supported by a separate part, e.g. base, cap
FR720828D 1930-08-07 1931-07-29 Improvements to incandescent electric lamps and discharge tubes Expired FR720828A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL381637X 1930-08-07

Publications (1)

Publication Number Publication Date
FR720828A true FR720828A (en) 1932-02-24

Family

ID=19785657

Family Applications (1)

Application Number Title Priority Date Filing Date
FR720828D Expired FR720828A (en) 1930-08-07 1931-07-29 Improvements to incandescent electric lamps and discharge tubes

Country Status (5)

Country Link
BE (1) BE381643A (en)
DE (1) DE583222C (en)
FR (1) FR720828A (en)
GB (1) GB381637A (en)
NL (1) NL32109C (en)

Also Published As

Publication number Publication date
BE381643A (en)
GB381637A (en) 1932-10-13
DE583222C (en) 1933-08-30
NL32109C (en)

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