FR771922A - Improvements to light bulbs for electronic discharge tubes, lamps and similar articles - Google Patents

Improvements to light bulbs for electronic discharge tubes, lamps and similar articles

Info

Publication number
FR771922A
FR771922A FR771922DA FR771922A FR 771922 A FR771922 A FR 771922A FR 771922D A FR771922D A FR 771922DA FR 771922 A FR771922 A FR 771922A
Authority
FR
France
Prior art keywords
lamps
light bulbs
discharge tubes
similar articles
electronic discharge
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR771922A publication Critical patent/FR771922A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/32—Sealing leading-in conductors
    • H01J9/323—Sealing leading-in conductors into a discharge lamp or a gas-filled discharge device

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
FR771922D 1933-04-19 1934-04-17 Improvements to light bulbs for electronic discharge tubes, lamps and similar articles Expired FR771922A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB11475/33A GB418220A (en) 1933-04-19 1933-04-19 Improvements in and relating to envelopes for electric discharge devices

Publications (1)

Publication Number Publication Date
FR771922A true FR771922A (en) 1934-10-19

Family

ID=9986934

Family Applications (1)

Application Number Title Priority Date Filing Date
FR771922D Expired FR771922A (en) 1933-04-19 1934-04-17 Improvements to light bulbs for electronic discharge tubes, lamps and similar articles

Country Status (3)

Country Link
US (1) US2042143A (en)
FR (1) FR771922A (en)
GB (1) GB418220A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452626A (en) * 1945-03-03 1948-11-02 Gen Electric X Ray Corp Electron emitter

Also Published As

Publication number Publication date
GB418220A (en) 1934-10-19
US2042143A (en) 1936-05-26

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