FR757631A - Improvements made to electric discharge tubes - Google Patents

Improvements made to electric discharge tubes

Info

Publication number
FR757631A
FR757631A FR757631DA FR757631A FR 757631 A FR757631 A FR 757631A FR 757631D A FR757631D A FR 757631DA FR 757631 A FR757631 A FR 757631A
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 FR757631A publication Critical patent/FR757631A/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
    • H01J61/04—Electrodes; Screens; Shields
FR757631D 1933-01-17 1933-06-26 Improvements made to electric discharge tubes Expired FR757631A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN34758D DE597745C (en) 1933-01-17 1933-01-17 Electric discharge tubes with metal vapor filling, in particular for emitting light beams

Publications (1)

Publication Number Publication Date
FR757631A true FR757631A (en) 1933-12-29

Family

ID=7346844

Family Applications (1)

Application Number Title Priority Date Filing Date
FR757631D Expired FR757631A (en) 1933-01-17 1933-06-26 Improvements made to electric discharge tubes

Country Status (5)

Country Link
US (2) US2001516A (en)
DE (2) DE594634C (en)
FR (1) FR757631A (en)
GB (2) GB425601A (en)
NL (1) NL40362C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2881345A (en) * 1953-02-03 1959-04-07 Claude General Neon Lights Ltd Low pressure mercury vapour electric discharge lamps
JPS56160753A (en) * 1980-05-14 1981-12-10 Matsushita Electronics Corp Fluorescent bulb and manufacturing method

Also Published As

Publication number Publication date
US2001516A (en) 1935-05-14
NL40362C (en)
DE597745C (en) 1934-05-30
GB425103A (en) 1935-03-07
DE594634C (en) 1934-03-19
US1961897A (en) 1934-06-05
GB425601A (en) 1935-03-19

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