2174794

Information

• Patent Grant
• 2174794

• References
• Source

• Patent Number

  2,174,794

• Date Filed

  Not available

• Date Issued

  Tuesday, October 3, 1939
  85 years ago

• CPC

  • C13B25/02 - Details

• US Classifications

  • 055 - Gas separation
  • 159 - Concentrating evaporators