2646546

Information

• Patent Grant
• 2646546

• References
• Source

• Patent Number

  2,646,546

• Date Filed

  Not available

• Date Issued

  Tuesday, July 21, 1953
  71 years ago

• CPC

  • G01R13/04 - for producing permanent records
  • G01R9/02 - Vibration galvanometers

• US Classifications

  • 324 - Electricity: measuring and testing