3720888

Information

• Patent Grant
• 3720888

• References
• Source

• Patent Number

  3,720,888

• Date Filed

  Not available

• Date Issued

  Tuesday, March 13, 1973
  51 years ago

• CPC

  • H03H2/005 - Coupling circuits between transmission lines or antennas and transmitters, receivers or amplifiers
  • H01P1/15 - by semiconductor devices
  • H01Q3/24 - varying the orientation by switching energy from one active radiating element to another
  • H03K17/74 - using diodes

• US Classifications

  • 333 - Wave transmission lines and networks
  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
  • 342 - Communications: directive radio wave systems and devices