Classifications

• • 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
  • H01J1/14—Solid thermionic cathodes characterised by the material
• • 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)
• Chemical Or Physical Treatment Of Fibers (AREA)
• Solid Thermionic Cathode (AREA)
• Cosmetics (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=10978688

Family Applications (3)

Family Applications Before (2)

Country Status (4)

• 0
  • NL NLAANVRAGE7706385,A patent/NL175814B/xx unknown
  • NL NL95833D patent/NL95833C/xx active
  • NL NL89857D patent/NL89857C/xx active
• 1949
  • 1949-12-13 CH CH281264D patent/CH281264A/de unknown
• 1950
  • 1950-01-11 FR FR1008217D patent/FR1008217A/fr not_active Expired
  • 1950-04-13 GB GB9129/50A patent/GB673438A/en not_active Expired
• 1953
  • 1953-01-26 CH CH314200D patent/CH314200A/de unknown
  • 1953-01-30 FR FR63699D patent/FR63699E/fr not_active Expired

Also Published As

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