GB652994A - Improvements in or relating to a method of manufacturing electric discharge tubes - Google Patents

Improvements in or relating to a method of manufacturing electric discharge tubes

Info

Publication number
GB652994A
GB652994A GB3400/48A GB340048A GB652994A GB 652994 A GB652994 A GB 652994A GB 3400/48 A GB3400/48 A GB 3400/48A GB 340048 A GB340048 A GB 340048A GB 652994 A GB652994 A GB 652994A
Authority
GB
United Kingdom
Prior art keywords
filament
bights
strip
templet
centring
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
GB3400/48A
Other languages
English (en)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Philips Electronics NV
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 Philips Gloeilampenfabrieken NV, Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB652994A publication Critical patent/GB652994A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus 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
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • H01J9/042—Manufacture, activation of the emissive part

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
GB3400/48A 1947-02-08 1948-02-05 Improvements in or relating to a method of manufacturing electric discharge tubes Expired GB652994A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
GB652994A true GB652994A (en) 1951-05-09

Family

ID=19795138

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3400/48A Expired GB652994A (en) 1947-02-08 1948-02-05 Improvements in or relating to a method of manufacturing electric discharge tubes

Country Status (5)

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

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 (xx) * 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
US2563434A (en) 1951-08-07
DE886494C (de) 1953-08-13
FR960822A (xx) 1950-04-26
NL68149C (xx)

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