2516520

Information

• Patent Grant
• 2516520

• References
• Source

• Patent Number

  2,516,520

• Date Filed

  Not available

• Date Issued

  Tuesday, July 25, 1950
  74 years ago

• CPC

  • G01R19/0076 - using thermionic valves

• US Classifications

  • 324 - Electricity: measuring and testing