3581144

Information

• Patent Grant
• 3581144

• References
• Source

• Patent Number

  3,581,144

• Date Filed

  Not available

• Date Issued

  Tuesday, May 25, 1971
  53 years ago

• CPC

  • H01J1/22 - Heaters
  • H05B3/40 - Heating elements having the shape of rods or tubes
  • H05B3/50 - heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
  • H05B3/688 - Fabrication of the plates

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 219 - Electric heating