3831430

Information

• Patent Grant
• 3831430

• References
• Source

• Patent Number

  3,831,430

• Date Filed

  Not available

• Date Issued

  Tuesday, August 27, 1974
  50 years ago

• CPC

  • G01N25/70 - by varying the temperature of the material
  • F25B9/04 - using vortex effect

• US Classifications

  • 374 - Thermal measuring and testing
  • 073 - Measuring and testing
  • 218 - High-voltage switches with arc preventing or extinguishing devices