2452539

Information

• Patent Grant
• 2452539

• References
• Source

• Patent Number

  2,452,539

• Date Filed

  Not available

• Date Issued

  Tuesday, November 2, 1948
  76 years ago

• CPC

  • G05F1/247 - with motor in control circuit

• US Classifications

  • 324 - Electricity: measuring and testing
  • 318 - Electricity: motive power systems
  • 346 - Recorders