2581831

Information

• Patent Grant
• 2581831

• References
• Source

• Patent Number

  2,581,831

• Date Filed

  Not available

• Date Issued

  Tuesday, January 8, 1952
  73 years ago

• CPC

  • H04M3/22 - Supervisory, monitoring, management
  • G05B1/025 - using inductance means
  • G06G7/16 - for multiplication or division

• US Classifications

  • 322 - Electricity: single generator systems
  • 324 - Electricity: measuring and testing
  • 702 - Data processing: measuring, calibrating, or testing
  • 708 - Electrical computers: arithmetic processing and calculating