3622889

Information

• Patent Grant
• 3622889

• References
• Source

• Patent Number

  3,622,889

• Date Filed

  Not available

• Date Issued

  Tuesday, November 23, 1971
  53 years ago

• CPC

  • G01R27/30 - with provision for recording characteristics

• US Classifications

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