1661813

Information

• Patent Grant
• 1661813

• References
• Source

• Patent Number

  1,661,813

• Date Filed

  Not available

• Date Issued

  Tuesday, March 6, 1928
  96 years ago

• CPC

  • C22B1/04 - Blast roasting
  • C22B19/02 - Preliminary treatment of ores Preliminary refining of zinc oxide

• US Classifications

  • 075 - Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures