3289250

Information

• Patent Grant
• 3289250

• References
• Source

• Patent Number

  3,289,250

• Date Filed

  Not available

• Date Issued

  Tuesday, December 6, 1966
  58 years ago

• CPC

  • B29C47/48 - using screws arranged coaxially, one within the other
  • B29C47/02 - incorporating preformed parts or layers
  • B29C47/027 - Simultaneous coating of more than one article
  • B29C47/20 - with annular opening
  • B29C47/24 - with die parts rotatable relative to each other
  • B29C47/30 - Multi-port extrusion nozzles
  • B29C47/361 - with the barrel or with a part thereof rotating
  • B29C47/46 - using screws extruding in opposite directions
  • B29C47/6006 - Hollow screws
  • B29C47/0023 - Hollow rigid articles having only one tubular passage
  • B29C47/003 - Articles having cross-sectional irregularities
  • B29C47/0033 - Articles having longitudinal irregularities

• US Classifications

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