2497640

Information

• Patent Grant
• 2497640

• References
• Source

• Patent Number

  2,497,640

• Date Filed

  Not available

• Date Issued

  Tuesday, February 14, 1950
  74 years ago

• CPC

  • H03F3/02 - with tubes only
  • H01J19/28 - Non-electron-emitting electrodes Screens
  • H01J43/025 - Circuits therefor
  • H03F1/08 - Modification of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
  • H03F1/50 - with tubes only
  • H01J2893/0012 - Constructional arrangements

• US Classifications

  • 330 - Amplifiers