3521870

Information

• Patent Grant
• 3521870

• References
• Source

• Patent Number

  3,521,870

• Date Filed

  Not available

• Date Issued

  Tuesday, July 28, 1970
  54 years ago

• CPC

  • F27D1/0006 - Linings or walls formed from bricks or layers with a particular composition or specific characteristics
  • C04B35/01 - based on oxide ceramics
  • C04B35/0473 - obtained from fused grains
  • C04B35/12 - based on chromium oxide
  • C04B35/42 - based on chromites
  • C04B35/44 - based on aluminates
  • C21C7/10 - Handling in a vacuum
  • F23M5/00 - Casings Linings Walls
  • F23M2700/005 - Structures of combustion chambers or smoke ducts

• US Classifications

  • 266 - Metallurgical apparatus
  • 373 - Industrial electric heating furnaces