1747664

Information

• Patent Grant
• 1747664

• References
• Source

• Patent Number

  1,747,664

• Date Filed

  Not available

• Date Issued

  Tuesday, February 18, 1930
  95 years ago

• CPC

  • H01J61/95 - Lamps with control electrode for varying intensity or wavelength of the light
  • F21V14/04 - by movement of reflectors
  • F41G5/00 - Elevating or traversing control systems for guns
  • G02B23/00 - Telescopes
  • G09B9/08 - for teaching control of aircraft
  • H01L31/08 - in which radiation controls flow of current through the device

• US Classifications

  • 089 - Ordnance
  • 235 - Registers
  • 246 - Railway switches and signals
  • 250 - Radiant energy
  • 318 - Electricity: motive power systems
  • 348 - Television