FR740603A - Improvements made to electric vacuum tubes - Google Patents

Improvements made to electric vacuum tubes

Info

Publication number
FR740603A
FR740603A FR740603DA FR740603A FR 740603 A FR740603 A FR 740603A FR 740603D A FR740603D A FR 740603DA FR 740603 A FR740603 A FR 740603A
Authority
FR
France
Prior art keywords
improvements made
electric vacuum
vacuum 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 FR740603A publication Critical patent/FR740603A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/42—Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/0002—Construction arrangements of electrode systems
FR740603D 1931-08-04 1932-07-29 Improvements made to electric vacuum tubes Expired FR740603A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL740603X 1931-08-04

Publications (1)

Publication Number Publication Date
FR740603A true FR740603A (en) 1933-01-30

Family

ID=19821301

Family Applications (1)

Application Number Title Priority Date Filing Date
FR740603D Expired FR740603A (en) 1931-08-04 1932-07-29 Improvements made to electric vacuum tubes

Country Status (1)

Country Link
FR (1) FR740603A (en)

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