3021561

Information

• Patent Grant
• 3021561

• References
• Source

• Patent Number

  3,021,561

• Date Filed

  Not available

• Date Issued

  Tuesday, February 20, 1962
  63 years ago

• CPC

  • B29C45/48 - Plasticising screw and injection screw comprising two separate screws
  • B29C45/541 - using a hollow plasticising screw co-operating with a coaxial injection ram

• US Classifications

  • 425 - Plastic article or earthenware shaping or treating: apparatus