FR578844A - Improvements to electric vacuum tubes - Google Patents

Improvements to electric vacuum tubes

Info

Publication number
FR578844A
FR578844A FR578844DA FR578844A FR 578844 A FR578844 A FR 578844A FR 578844D A FR578844D A FR 578844DA FR 578844 A FR578844 A FR 578844A
Authority
FR
France
Prior art keywords
electric vacuum
vacuum tubes
tubes
electric
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)
Inventor
Ernest Yeoman Robinson
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 FR578844A publication Critical patent/FR578844A/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
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • H01J9/385—Exhausting vessels

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
FR578844D 1924-03-18 1924-03-18 Improvements to electric vacuum tubes Expired FR578844A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR578844T 1924-03-18

Publications (1)

Publication Number Publication Date
FR578844A true FR578844A (en) 1924-10-04

Family

ID=8955710

Family Applications (1)

Application Number Title Priority Date Filing Date
FR578844D Expired FR578844A (en) 1924-03-18 1924-03-18 Improvements to electric vacuum tubes

Country Status (1)

Country Link
FR (1) FR578844A (en)

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