1630431

Information

• Patent Grant
• 1630431

• References
• Source

• Patent Number

  1,630,431

• Date Filed

  Not available

• Date Issued

  Tuesday, May 31, 1927
  97 years ago

• CPC

  • H01J19/38 - Control electrodes
  • H01J2893/0015 - Non-sealed electrodes
  • Y10T24/44812 - Convolutions of coil form faces

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 024 - Buckles, buttons, clasps, etc.
  • 174 - Electricity: conductors and insulators