3649920

Information

• Patent Grant
• 3649920

• References
• Source

• Patent Number

  3,649,920

• Date Filed

  Not available

• Date Issued

  Tuesday, March 14, 1972
  52 years ago

• CPC

  • H03J7/32 - with simultaneous display of received frequencies

• US Classifications

  • 324 - Electricity: measuring and testing
  • 455 - Telecommunications