1816581

Information

• Patent Grant
• 1816581

• References
• Source

• Patent Number

  1,816,581

• Date Filed

  Not available

• Date Issued

  Tuesday, July 28, 1931
  93 years ago

• CPC

  • G01P3/4956 - with thermal compensation

• US Classifications

  • 073 - Measuring and testing
  • 324 - Electricity: measuring and testing