1690906

Information

• Patent Grant
• 1690906

• References
• Source

• Patent Number

  1,690,906

• Date Filed

  Not available

• Date Issued

  Tuesday, November 6, 1928
  96 years ago

• CPC

  • H01J35/14 - Arrangements for concentrating, focusing, or directing the cathode ray
  • H05G1/50 - Passing the tube current only during a restricted portion of the voltage waveform

• US Classifications

  • 378 - X-ray or gamma ray systems or devices
  • 313 - Electric lamp and discharge devices
  • 315 - Electric lamp and discharge devices: systems
  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems