FR705337A - Improvements made to incandescent electric lamps and discharge tubes - Google Patents

Improvements made to incandescent electric lamps and discharge tubes

Info

Publication number
FR705337A
FR705337A FR705337DA FR705337A FR 705337 A FR705337 A FR 705337A FR 705337D A FR705337D A FR 705337DA FR 705337 A FR705337 A FR 705337A
Authority
FR
France
Prior art keywords
improvements made
discharge tubes
electric lamps
incandescent 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
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 FR705337A publication Critical patent/FR705337A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/32—Seals for leading-in conductors
FR705337D 1929-12-09 1930-11-10 Improvements made to incandescent electric lamps and discharge tubes Expired FR705337A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL356984X 1929-12-09

Publications (1)

Publication Number Publication Date
FR705337A true FR705337A (en) 1931-06-04

Family

ID=19785258

Family Applications (1)

Application Number Title Priority Date Filing Date
FR705337D Expired FR705337A (en) 1929-12-09 1930-11-10 Improvements made to incandescent electric lamps and discharge tubes

Country Status (2)

Country Link
FR (1) FR705337A (en)
GB (1) GB356984A (en)

Also Published As

Publication number Publication date
GB356984A (en) 1931-09-17

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