1821907

Information

• Patent Grant
• 1821907

• References
• Source

• Patent Number

  1,821,907

• Date Filed

  Not available

• Date Issued

  Tuesday, September 1, 1931
  93 years ago

• CPC

  • C05F1/02 - Apparatus for the manufacture
  • Y02P20/145 - the feedstock being materials of biological origin

• US Classifications

  • 422 - Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing
  • 034 - Drying and gas or vapor contact with solids
  • 165 - Heat exchange
  • 210 - Liquid purification or separation