FR776840A - Improvements made to electric discharge tubes - Google Patents

Improvements made to electric discharge tubes

Info

Publication number
FR776840A
FR776840A FR776840DA FR776840A FR 776840 A FR776840 A FR 776840A FR 776840D A FR776840D A FR 776840DA FR 776840 A FR776840 A FR 776840A
Authority
FR
France
Prior art keywords
electric discharge
improvements made
discharge tubes
tubes
electric
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 FR776840A publication Critical patent/FR776840A/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
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/34—Double-wall vessels or containers
FR776840D 1933-08-29 1934-08-03 Improvements made to electric discharge tubes Expired FR776840A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN35660D DE656438C (en) 1933-08-29 1933-08-29 Electric discharge tubes with steam that are difficult to evaporate metals used for light emission

Publications (1)

Publication Number Publication Date
FR776840A true FR776840A (en) 1935-02-05

Family

ID=7347070

Family Applications (1)

Application Number Title Priority Date Filing Date
FR776840D Expired FR776840A (en) 1933-08-29 1934-08-03 Improvements made to electric discharge tubes

Country Status (4)

Country Link
BE (1) BE404539A (en)
DE (1) DE656438C (en)
FR (1) FR776840A (en)
NL (1) NL40363C (en)

Also Published As

Publication number Publication date
DE656438C (en) 1938-02-04
NL40363C (en) 1937-04-15
BE404539A (en)

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