2291713

Information

• Patent Grant
• 2291713

• References
• Source

• Patent Number

  2,291,713

• Date Filed

  Not available

• Date Issued

  Tuesday, August 4, 1942
  82 years ago

• CPC

  • G01R13/04 - for producing permanent records
  • G01R5/10 - String galvanometers

• US Classifications

  • 324 - Electricity: measuring and testing
  • 267 - Spring devices