FR1124448A - Improvements to pumping devices - Google Patents

Improvements to pumping devices

Info

Publication number
FR1124448A
FR1124448A FR1124448DA FR1124448A FR 1124448 A FR1124448 A FR 1124448A FR 1124448D A FR1124448D A FR 1124448DA FR 1124448 A FR1124448 A FR 1124448A
Authority
FR
France
Prior art keywords
pumping devices
pumping
devices
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries Ltd
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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Application granted granted Critical
Publication of FR1124448A publication Critical patent/FR1124448A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/28—Luminescent screens with protective, conductive or reflective layers
    • 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
FR1124448D 1954-01-29 1955-01-28 Improvements to pumping devices Expired FR1124448A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1124447X 1954-01-29

Publications (1)

Publication Number Publication Date
FR1124448A true FR1124448A (en) 1956-10-10

Family

ID=10875882

Family Applications (2)

Application Number Title Priority Date Filing Date
FR1124448D Expired FR1124448A (en) 1954-01-29 1955-01-28 Improvements to pumping devices
FR1124447D Expired FR1124447A (en) 1954-01-29 1955-01-28 Improvements in the manufacture of cathode-ray tubes

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR1124447D Expired FR1124447A (en) 1954-01-29 1955-01-28 Improvements in the manufacture of cathode-ray tubes

Country Status (1)

Country Link
FR (2) FR1124448A (en)

Also Published As

Publication number Publication date
FR1124447A (en) 1956-10-10

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