2404408

Information

• Patent Grant
• 2404408

• References
• Source

• Patent Number

  2,404,408

• Date Filed

  Not available

• Date Issued

  Tuesday, July 23, 1946
  78 years ago

• CPC

  • H03F3/48 - with tubes only

• US Classifications

  • 455 - Telecommunications
  • 330 - Amplifiers