3509458

Information

• Patent Grant
• 3509458

• References
• Source

• Patent Number

  3,509,458

• Date Filed

  Not available

• Date Issued

  Tuesday, April 28, 1970
  54 years ago

• CPC

  • G01R15/005 - Circuits for altering the indicating characteristic
  • G01R5/10 - String galvanometers

• US Classifications

  • 324 - Electricity: measuring and testing
  • 346 - Recorders