3189821

Information

• Patent Grant
• 3189821

• References
• Source

• Patent Number

  3,189,821

• Date Filed

  Not available

• Date Issued

  Tuesday, June 15, 1965
  59 years ago

• CPC

  • G01R11/60 - Subtraction meters Meters measuring maximum or minimum load hours

• US Classifications

  • 324 - Electricity: measuring and testing
  • 346 - Recorders
  • 360 - Dynamic magnetic information storage or retrieval