2227078

Information

• Patent Grant
• 2227078

• References
• Source

• Patent Number

  2,227,078

• Date Filed

  Not available

• Date Issued

  Tuesday, December 31, 1940
  84 years ago

• CPC

  • H03D7/20 - by means of transit-time tubes

• US Classifications

  • 455 - Telecommunications
  • 313 - Electric lamp and discharge devices
  • 315 - Electric lamp and discharge devices: systems
  • 331 - Oscillators