FR562647A - Improvements to vacuum tubes - Google Patents

Improvements to vacuum tubes

Info

Publication number
FR562647A
FR562647A FR562647DA FR562647A FR 562647 A FR562647 A FR 562647A FR 562647D A FR562647D A FR 562647DA FR 562647 A FR562647 A FR 562647A
Authority
FR
France
Prior art keywords
vacuum tubes
tubes
vacuum
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.)
Ind E C Grammont & Alexandre G
Original Assignee
Ind E C Grammont & Alexandre G
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 Ind E C Grammont & Alexandre G filed Critical Ind E C Grammont & Alexandre G
Application granted granted Critical
Publication of FR562647A publication Critical patent/FR562647A/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
    • H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
FR562647D 1923-02-23 1923-02-23 Improvements to vacuum tubes Expired FR562647A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR562647T 1923-02-23

Publications (1)

Publication Number Publication Date
FR562647A true FR562647A (en) 1923-11-15

Family

ID=8944433

Family Applications (1)

Application Number Title Priority Date Filing Date
FR562647D Expired FR562647A (en) 1923-02-23 1923-02-23 Improvements to vacuum tubes

Country Status (1)

Country Link
FR (1) FR562647A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2431198A (en) * 1944-03-17 1947-11-18 Beltone Hearing Aid Co Base structure for miniature electron tubes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2431198A (en) * 1944-03-17 1947-11-18 Beltone Hearing Aid Co Base structure for miniature electron tubes

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