227020

Information

• Patent Grant
• 227020

• References
• Source

• Patent Number

  227,020

• Date Filed

  Not available

• Date Issued

  Tuesday, April 27, 1880
  144 years ago

• CPC

  • F28F5/06 - Hollow screw conveyors
  • B29C47/0009 - characterised by the shape of the articles
  • B29C47/84 - Heating or cooling the screws
  • Y10S165/148 - Auger

• US Classifications

  • 165 - Heat exchange
  • 034 - Drying and gas or vapor contact with solids