2190304

Information

• Patent Grant
• 2190304

• References
• Source

• Patent Number

  2,190,304

• Date Filed

  Not available

• Date Issued

  Tuesday, February 13, 1940
  86 years ago

• CPC

  • C01B21/44 - Concentration

• US Classifications

  • 203 - Distillation: processes, separatory
  • 159 - Concentrating evaporators
  • 422 - Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing
  • 423 - Chemistry of inorganic compounds