3564421

Information

• Patent Grant
• 3564421

• References
• Source

• Patent Number

  3,564,421

• Date Filed

  Not available

• Date Issued

  Tuesday, February 16, 1971
  54 years ago

• CPC

  • H01Q7/005 - with variable reactance for tuning the antenna
  • H03H2/008 - Receiver or amplifier input circuits

• US Classifications

  • 455 - Telecommunications
  • 343 - Communications: radio wave antennas