NL68149C - - Google Patents

Info

Publication number
NL68149C
NL68149C NL68149DA NL68149C NL 68149 C NL68149 C NL 68149C NL 68149D A NL68149D A NL 68149DA NL 68149 C NL68149 C NL 68149C
Authority
NL
Netherlands
Application number
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.)
Publication of NL68149C publication Critical patent/NL68149C/xx

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00Apparatus 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
    • H01J9/02Manufacture of electrodes or electrode systems
    • H01J9/04Manufacture of electrodes or electrode systems of thermionic cathodes
    • H01J9/042Manufacture, activation of the emissive part

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
NL68149D 1947-02-08 NL68149C (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL652994X 1947-02-08

Publications (1)

Publication Number Publication Date
NL68149C true NL68149C (sv)

Family

ID=19795138

Family Applications (1)

Application Number Title Priority Date Filing Date
NL68149D NL68149C (sv) 1947-02-08

Country Status (5)

Country Link
US (1) US2563434A (sv)
DE (1) DE886494C (sv)
FR (1) FR960822A (sv)
GB (1) GB652994A (sv)
NL (1) NL68149C (sv)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1038660B (de) * 1954-09-25 1958-09-11 Telefunken Gmbh Verfahren zum Spannen des Fadens einer direkt oder indirekt geheizten Kathode einer Elektronenroehre

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1740264A (en) * 1929-12-17 Vacuum tube
US1665896A (en) * 1924-07-17 1928-04-10 Gen Electric Electron-discharge device
BE353118A (sv) * 1927-07-29
US1972276A (en) * 1929-08-03 1934-09-04 Bell Telephone Labor Inc Electron discharge device
US2062751A (en) * 1930-05-06 1936-12-01 Arcturus Dev Company Element assembly for electron devices
US2047944A (en) * 1935-04-25 1936-07-21 Hygrade Sylvania Corp Space discharge tube
US2042607A (en) * 1935-07-17 1936-06-02 Hygrade Sylvania Corp Electron discharge tube
US2100306A (en) * 1936-09-28 1937-11-23 Hygrade Sylvania Corp Filament support for radio tubes and the like
US2366220A (en) * 1940-07-20 1945-01-02 Raytheon Mfg Co Nonmicrophonic tube
US2267450A (en) * 1940-08-24 1941-12-23 Bell Telephone Labor Inc Electron discharge device
US2399005A (en) * 1943-02-12 1946-04-23 Gen Electric Method of fabricating electric discharge devices

Also Published As

Publication number Publication date
GB652994A (en) 1951-05-09
FR960822A (sv) 1950-04-26
US2563434A (en) 1951-08-07
DE886494C (de) 1953-08-13

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