3721744

Information

• Patent Grant
• 3721744

• References
• Source

• Patent Number

  3,721,744

• Date Filed

  Not available

• Date Issued

  Tuesday, March 20, 1973
  51 years ago

• CPC

  • C03B5/0336 - Shaft furnaces
  • H05B3/0028 - electrical diagrams for heating by particular resistances
  • H05B3/62 - Heating elements specially adapted for furnaces
  • Y10S65/04 - Electric heat

• US Classifications

  • 373 - Industrial electric heating furnaces
  • 065 - Glass manufacturing