3809519

Information

• Patent Grant
• 3809519

• References
• Source

• Patent Number

  3,809,519

• Date Filed

  Not available

• Date Issued

  Tuesday, May 7, 1974
  51 years ago

• CPC

  • B29C44/0461 - by having different chemical compositions in different places
  • B29C44/0492 - Devices for feeding the different materials
  • B29C45/1606 - using a rotatable valve
  • B29C45/00 - Injection moulding
  • Y10T137/86823 - Rotary valve

• US Classifications

  • 425 - Plastic article or earthenware shaping or treating: apparatus
  • 137 - Fluid handling