FR720013A - Tube à incandescence - Google Patents

Tube à incandescence

Info

Publication number
FR720013A
FR720013A FR720013DA FR720013A FR 720013 A FR720013 A FR 720013A FR 720013D A FR720013D A FR 720013DA FR 720013 A FR720013 A FR 720013A
Authority
FR
France
Prior art keywords
incandescent tube
incandescent
tube
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
English (en)
Inventor
Leonard Hally Roos
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 filed Critical
Application granted granted Critical
Publication of FR720013A publication Critical patent/FR720013A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/38—Cold-cathode tubes
    • H01J17/40—Cold-cathode tubes with one cathode and one anode, e.g. glow tubes, tuning-indicator glow tubes, voltage-stabiliser tubes, voltage-indicator tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)
    • H01J2893/0065—Electrode systems
    • H01J2893/0067—Electrode assembly without control electrodes, e.g. including a screen
FR720013D 1931-07-15 1931-07-15 Tube à incandescence Expired FR720013A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR720013T 1931-07-15

Publications (1)

Publication Number Publication Date
FR720013A true FR720013A (fr) 1932-02-15

Family

ID=9091469

Family Applications (1)

Application Number Title Priority Date Filing Date
FR720013D Expired FR720013A (fr) 1931-07-15 1931-07-15 Tube à incandescence

Country Status (1)

Country Link
FR (1) FR720013A (fr)

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