2439638

Information

• Patent Grant
• 2439638

• References
• Source

• Patent Number

  2,439,638

• Date Filed

  Not available

• Date Issued

  Tuesday, April 13, 1948
  77 years ago

• CPC

  • H03F3/54 - Amplifiers using transit-time effect in tubes or semiconductor devices
  • H01J25/32 - Tubes with plural reflection
  • H03F1/08 - Modification of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
  • H04B1/163 - Special arrangements for the reduction of the damping of resonant circuits of receivers

• US Classifications

  • 330 - Amplifiers
  • 313 - Electric lamp and discharge devices
  • 315 - Electric lamp and discharge devices: systems
  • 331 - Oscillators