FR855151A - Improvements to discharge tubes with an indirect cathode - Google Patents

Improvements to discharge tubes with an indirect cathode

Info

Publication number
FR855151A
FR855151A FR855151DA FR855151A FR 855151 A FR855151 A FR 855151A FR 855151D A FR855151D A FR 855151DA FR 855151 A FR855151 A FR 855151A
Authority
FR
France
Prior art keywords
discharge tubes
indirect cathode
indirect
cathode
tubes
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Application granted granted Critical
Publication of FR855151A publication Critical patent/FR855151A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
FR855151D 1938-05-25 1939-05-23 Improvements to discharge tubes with an indirect cathode Expired FR855151A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE855151X 1938-05-25

Publications (1)

Publication Number Publication Date
FR855151A true FR855151A (en) 1940-05-04

Family

ID=6789023

Family Applications (1)

Application Number Title Priority Date Filing Date
FR855151D Expired FR855151A (en) 1938-05-25 1939-05-23 Improvements to discharge tubes with an indirect cathode

Country Status (2)

Country Link
FR (1) FR855151A (en)
NL (1) NL61926C (en)

Also Published As

Publication number Publication date
NL61926C (en)

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