158246

Information

• Patent Grant
• 158246

• References
• Source

• Patent Number

  158,246

• Date Filed

  Not available

• Date Issued

  Tuesday, December 29, 1874
  150 years ago

• CPC

  • B29C47/84 - Heating or cooling the screws
  • B29C47/0009 - characterised by the shape of the articles
  • F28F5/06 - Hollow screw conveyors
  • Y10S165/149 - having hollow blade

• US Classifications

  • 165 - Heat exchange
  • 126 - Stoves and furnaces