2990542

Information

• Patent Grant
• 2990542

• References
• Source

• Patent Number

  2,990,542

• Date Filed

  Not available

• Date Issued

  Tuesday, June 27, 1961
  63 years ago

• CPC

  • H02H7/00 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
  • H05B6/28 - Protective systems

• US Classifications

  • 373 - Industrial electric heating furnaces
  • 324 - Electricity: measuring and testing
  • 340 - Communications: electrical