3641538

Information

• Patent Grant
• 3641538

• References
• Source

• Patent Number

  3,641,538

• Date Filed

  Not available

• Date Issued

  Tuesday, February 8, 1972
  53 years ago

• CPC

  • G01K1/024 - for remote indication
  • G08C19/26 - by varying pulse repetition frequency

• US Classifications

  • 340 - Communications: electrical
  • 331 - Oscillators
  • 374 - Thermal measuring and testing
  • 455 - Telecommunications