Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
  • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
  • H01J25/76—Dynamic electron-multiplier tubes, e.g. Farnsworth multiplier tube, multipactor
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B7/00—Roofs; Roof construction with regard to insulation
  • E04B7/08—Vaulted roofs
  • E04B7/10—Shell structures, e.g. of hyperbolic-parabolic shape; Grid-like formations acting as shell structures; Folded structures
  • E04B7/105—Grid-like structures

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=21965391

Family Applications (1)

Country Status (4)

• 1937
  • 1937-10-29 GB GB29591/37A patent/GB504630A/en not_active Expired
  • 1937-11-02 FR FR828598D patent/FR828598A/fr not_active Expired
  • 1937-11-02 BE BE424399D patent/BE424399A/xx unknown
• 1945
  • 1945-08-15 NL NL94873A patent/NL57675C/xx active

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