3524222

Information

• Patent Grant
• 3524222

• References
• Source

• Patent Number

  3,524,222

• Date Filed

  Not available

• Date Issued

  Tuesday, August 18, 1970
  54 years ago

• CPC

  • B29C47/60 - Screws
  • B29C47/6018 - having varying channel depth
  • B29C47/6075 - characterised by thread details, i.e. by the special shape of a single thread
  • B29C47/627 - being multi-flight and having three or more flights
  • B29C47/76 - Venting, drying or degassing means
  • B29C47/766 - in screw extruders
  • B29C47/0009 - characterised by the shape of the articles
  • Y10S159/35 - Viewports, peepsights, and sightglasses

• US Classifications

  • 425 - Plastic article or earthenware shaping or treating: apparatus
  • 159 - Concentrating evaporators