2864997

Information

• Patent Grant
• 2864997

• References
• Source

• Patent Number

  2,864,997

• Date Filed

  Not available

• Date Issued

  Tuesday, December 16, 1958
  66 years ago

• CPC

  • G01R19/0076 - using thermionic valves
  • G01M1/22 - and converting vibrations due to unbalance into electric variables

• US Classifications

  • 324 - Electricity: measuring and testing
  • 073 - Measuring and testing
  • 340 - Communications: electrical