2686821

Information

• Patent Grant
• 2686821

• References
• Source

• Patent Number

  2,686,821

• Date Filed

  Not available

• Date Issued

  Tuesday, August 17, 1954
  70 years ago

• CPC

  • C03B37/092 - Direct-resistance heating

• US Classifications

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