3872893

Information

• Patent Grant
• 3872893

• References
• Source

• Patent Number

  3,872,893

• Date Filed

  Not available

• Date Issued

  Tuesday, March 25, 1975
  49 years ago

• CPC

  • B29C47/065 - with components in layered configuration
  • B29C47/0023 - Hollow rigid articles having only one tubular passage
  • B29C47/0033 - Articles having longitudinal irregularities
  • B29C47/0052 - using a plurality of extrusion dies
  • B29C49/0021 - using moulds or mould parts movable in a closed path
  • B29C49/22 - using multilayered preforms or parisons
  • B29C47/0054 - Extrusion moulding combined with blow-moulding or thermoforming
  • B29K2021/00 - Use of unspecified rubbers as moulding material
  • B29K2023/22 - Copolymers of isobutene
  • B29K2027/06 - PVC
  • B29L2023/18 - Pleated or corrugated hoses
  • Y10S264/52 - Processes of making corrugated tubes for gas mask

• US Classifications

  • 138 - Pipes and tubular conduits
  • 264 - Plastic and nonmetallic article shaping or treating: processes