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FR590197A - Incandescent cathode for vacuum tubes - Google Patents

Incandescent cathode for vacuum tubes

Info

Publication number
FR590197A
FR590197A FR590197DA FR590197A FR 590197 A FR590197 A FR 590197A FR 590197D A FR590197D A FR 590197DA FR 590197 A FR590197 A FR 590197A
Authority
FR
France
Prior art keywords
vacuum tubes
incandescent cathode
incandescent
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.)
PHONIX RONTGENROHRENFABRIKEN A
Original Assignee
PHONIX RONTGENROHRENFABRIKEN A
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 PHONIX RONTGENROHRENFABRIKEN A filed Critical PHONIX RONTGENROHRENFABRIKEN A
Application granted granted Critical
Publication of FR590197A publication Critical patent/FR590197A/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
    • H01J1/15—Cathodes heated directly by an electric current
    • H01J1/16—Cathodes heated directly by an electric current characterised by the shape
FR590197D 1924-07-03 1924-10-31 Incandescent cathode for vacuum tubes Expired FR590197A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE590197X 1924-07-03

Publications (1)

Publication Number Publication Date
FR590197A true FR590197A (en) 1925-06-12

Family

ID=6572715

Family Applications (1)

Application Number Title Priority Date Filing Date
FR590197D Expired FR590197A (en) 1924-07-03 1924-10-31 Incandescent cathode for vacuum tubes

Country Status (2)

Country Link
FR (1) FR590197A (en)
NL (1) NL17006C (en)

Also Published As

Publication number Publication date
NL17006C (en)

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