CH258433A - Method of manufacturing the cathode of a discharge tube. - Google Patents

Method of manufacturing the cathode of a discharge tube.

Info

Publication number
CH258433A
CH258433A CH258433DA CH258433A CH 258433 A CH258433 A CH 258433A CH 258433D A CH258433D A CH 258433DA CH 258433 A CH258433 A CH 258433A
Authority
CH
Switzerland
Prior art keywords
cathode
manufacturing
discharge tube
discharge
tube
Prior art date
Application number
Other languages
French (fr)
Inventor
Gloeilampenfabrieken N Philips
Original Assignee
Philips 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 Nv filed Critical Philips Nv
Publication of CH258433A publication Critical patent/CH258433A/en

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)
  • Physical Vapour Deposition (AREA)
  • Gas-Filled Discharge Tubes (AREA)
CH258433D 1944-11-04 1946-09-07 Method of manufacturing the cathode of a discharge tube. CH258433A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE258433X 1944-11-04

Publications (1)

Publication Number Publication Date
CH258433A true CH258433A (en) 1948-11-30

Family

ID=3866700

Family Applications (1)

Application Number Title Priority Date Filing Date
CH258433D CH258433A (en) 1944-11-04 1946-09-07 Method of manufacturing the cathode of a discharge tube.

Country Status (5)

Country Link
US (1) US2453753A (en)
BE (1) BE457760A (en)
CH (1) CH258433A (en)
DE (1) DE803919C (en)
FR (1) FR936339A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL203172A (en) * 1954-12-31
NL101810C (en) * 1955-02-12
US2750528A (en) * 1955-02-17 1956-06-12 Sylvania Electric Prod Electronic tube element protective coating

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB255090A (en) * 1925-07-13 1927-06-09 Gen Electric Improvements in or relating to methods of manufacturing electrodes for electron discharge devices
US1936334A (en) * 1929-01-31 1933-11-21 Gen Scientific Corp Electrode
US1936419A (en) * 1930-06-03 1933-11-21 Gen Electric Photo-electric tube

Also Published As

Publication number Publication date
DE803919C (en) 1951-04-12
US2453753A (en) 1948-11-16
FR936339A (en) 1948-07-16
BE457760A (en)

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