GB1250436A - - Google Patents

Info

Publication number
GB1250436A
GB1250436A GB1250436DA GB1250436A GB 1250436 A GB1250436 A GB 1250436A GB 1250436D A GB1250436D A GB 1250436DA GB 1250436 A GB1250436 A GB 1250436A
Authority
GB
United Kingdom
Prior art keywords
march
cylinder
cathode
foil
foil cylinder
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
English (en)
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
Priority claimed from DES97897A external-priority patent/DE1223063B/de
Application filed filed Critical
Publication of GB1250436A publication Critical patent/GB1250436A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/77—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D307/78—Benzo [b] furans; Hydrogenated benzo [b] furans
    • C07D307/82—Benzo [b] furans; Hydrogenated benzo [b] furans with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the hetero ring
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Electron Sources, Ion Sources (AREA)
GB1250436D 1965-06-30 1970-03-18 Expired GB1250436A (enrdf_load_stackoverflow)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DES97897A DE1223063B (de) 1965-06-30 1965-06-30 Mittelbar geheizte Kathode fuer elektrische Entladungsgefaesse und Verfahren zur Temperatur-regelung der Kathode
DE19691913986 DE1913986A1 (de) 1965-06-30 1969-03-19 Mittelbar geheizte Kathode fuer elektrische Entladungsgefaesse und Verfahren zur Temperatur-Regelung der Kathode

Publications (1)

Publication Number Publication Date
GB1250436A true GB1250436A (enrdf_load_stackoverflow) 1971-10-20

Family

ID=25757160

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1250436D Expired GB1250436A (enrdf_load_stackoverflow) 1965-06-30 1970-03-18

Country Status (2)

Country Link
DE (1) DE1913986A1 (enrdf_load_stackoverflow)
GB (1) GB1250436A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
DE1913986A1 (de) 1970-10-01

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees