3219331

Information

• Patent Grant
• 3219331

• References
• Source

• Patent Number

  3,219,331

• Date Filed

  Not available

• Date Issued

  Tuesday, November 23, 1965
  59 years ago

• CPC

  • C21D1/773 - under reduced pressure or vacuum
  • F27B2005/064 - disposed in the furnace, around the chamber
  • F27B2005/143 - Heating rods disposed in the chamber
  • F27B2005/162 - through closable or non-closable openings of the chamber walls
  • F27B2005/167 - the atmosphere being recirculated through the treatment chamber by a turbine

• US Classifications

  • 266 - Metallurgical apparatus
  • 432 - Heating