3636537

Information

• Patent Grant
• 3636537

• References
• Source

• Patent Number

  3,636,537

• Date Filed

  Not available

• Date Issued

  Tuesday, January 18, 1972
  53 years ago

• CPC

  • G08C15/04 - the signals being modulated on carrier frequencies

• US Classifications

  • 340 - Communications: electrical
  • 324 - Electricity: measuring and testing