2449439

Information

• Patent Grant
• 2449439

• References
• Source

• Patent Number

  2,449,439

• Date Filed

  Not available

• Date Issued

  Tuesday, September 14, 1948
  75 years ago

• CPC

  • H01H29/30 - with level of surface of contact liquid displaced by expansion or evaporation thereof

• US Classifications

  • 337 - Electricity: electrothermally or thermally actuated switches
  • 313 - Electric lamp and discharge devices