3909707

Information

• Patent Grant
• 3909707

• References
• Source

• Patent Number

  3,909,707

• Date Filed

  Not available

• Date Issued

  Tuesday, September 30, 1975
  49 years ago

• CPC

  • H03K5/26 - the characteristic being duration, interval, position, frequency, or sequence
  • G01R23/02 - Arrangements for measuring frequency
  • G01R27/12 - using hand generators

• US Classifications

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