NL28979C - - Google Patents

Info

Publication number
NL28979C
NL28979C NL28979DA NL28979C NL 28979 C NL28979 C NL 28979C NL 28979D A NL28979D A NL 28979DA NL 28979 C NL28979 C NL 28979C
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 NL28979C publication Critical patent/NL28979C/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)
  • Solid Thermionic Cathode (AREA)
NL28979D 1929-12-23 NL28979C (US06521211-20030218-C00004.png)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU341826X 1929-12-23

Publications (1)

Publication Number Publication Date
NL28979C true NL28979C (US06521211-20030218-C00004.png)

Family

ID=10978844

Family Applications (1)

Application Number Title Priority Date Filing Date
NL28979D NL28979C (US06521211-20030218-C00004.png) 1929-12-23

Country Status (5)

Country Link
BE (1) BE370532A (US06521211-20030218-C00004.png)
DE (1) DE539890C (US06521211-20030218-C00004.png)
FR (1) FR696589A (US06521211-20030218-C00004.png)
GB (1) GB341826A (US06521211-20030218-C00004.png)
NL (1) NL28979C (US06521211-20030218-C00004.png)

Also Published As

Publication number Publication date
DE539890C (de) 1931-12-03
BE370532A (US06521211-20030218-C00004.png)
FR696589A (fr) 1931-01-05
GB341826A (en) 1931-01-22

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