FR1012204A - Improvements in the manufacture of vacuum tubes - Google Patents

Improvements in the manufacture of vacuum tubes

Info

Publication number
FR1012204A
FR1012204A FR1012204DA FR1012204A FR 1012204 A FR1012204 A FR 1012204A FR 1012204D A FR1012204D A FR 1012204DA FR 1012204 A FR1012204 A FR 1012204A
Authority
FR
France
Prior art keywords
manufacture
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.)
OUTIL R L BV
Original Assignee
OUTIL R L BV
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 OUTIL R L BV filed Critical OUTIL R L BV
Application granted granted Critical
Publication of FR1012204A publication Critical patent/FR1012204A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/94—Selection of substances for gas fillings; Means for obtaining or maintaining the desired pressure within the tube, e.g. by gettering
FR1012204D 1949-07-04 1949-07-04 Improvements in the manufacture of vacuum tubes Expired FR1012204A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1012204T 1949-07-04

Publications (1)

Publication Number Publication Date
FR1012204A true FR1012204A (en) 1952-07-07

Family

ID=9570636

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1012204D Expired FR1012204A (en) 1949-07-04 1949-07-04 Improvements in the manufacture of vacuum tubes

Country Status (1)

Country Link
FR (1) FR1012204A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4132459A (en) * 1977-03-28 1979-01-02 Zenith Radio Corporation Method for cathode coating erosion suppression for a television tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4132459A (en) * 1977-03-28 1979-01-02 Zenith Radio Corporation Method for cathode coating erosion suppression for a television tube

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