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FR647645A - Improvements to vacuum tube devices - Google Patents

Improvements to vacuum tube devices

Info

Publication number
FR647645A
FR647645A FR647645DA FR647645A FR 647645 A FR647645 A FR 647645A FR 647645D A FR647645D A FR 647645DA FR 647645 A FR647645 A FR 647645A
Authority
FR
France
Prior art keywords
vacuum tube
tube devices
devices
vacuum
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
French (fr)
Inventor
James Robert Robertson
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 FR647645A publication Critical patent/FR647645A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
    • H01J65/04—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
    • H01J65/042—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Radiation-Therapy Devices (AREA)
FR647645D 1927-01-22 1928-01-24 Improvements to vacuum tube devices Expired FR647645A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2407127A GB289326A (en) 1927-01-22 1927-01-22 Improvements in or relating to vacuum tube illuminating devices

Publications (1)

Publication Number Publication Date
FR647645A true FR647645A (en) 1928-11-27

Family

ID=10205900

Family Applications (1)

Application Number Title Priority Date Filing Date
FR647645D Expired FR647645A (en) 1927-01-22 1928-01-24 Improvements to vacuum tube devices

Country Status (2)

Country Link
FR (1) FR647645A (en)
GB (1) GB289326A (en)

Also Published As

Publication number Publication date
GB289326A (en) 1928-04-23

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