2668985

Information

• Patent Grant
• 2668985

• References
• Source

• Patent Number

  2,668,985

• Date Filed

  Not available

• Date Issued

  Tuesday, February 16, 1954
  70 years ago

• CPC

  • B29C45/34 - having venting means
  • B22D17/14 - Machines with evacuated die cavity
  • Y10S164/09 - Piston-vacuum
  • Y10S264/78 - Processes of molding using vacuum
  • Y10S425/812 - Venting

• US Classifications

  • 425 - Plastic article or earthenware shaping or treating: apparatus
  • 164 - Metal founding
  • 264 - Plastic and nonmetallic article shaping or treating: processes