3408439

Information

• Patent Grant
• 3408439

• References
• Source

• Patent Number

  3,408,439

• Date Filed

  Not available

• Date Issued

  Tuesday, October 29, 1968
  56 years ago

• CPC

  • F16J3/02 - Diaphragms
  • B29C53/025 - using a folding bag
  • B29C53/14 - Twisting
  • B29C53/82 - Cores or mandrels
  • B29C67/0014 - for shaping tubes or blown tubular films
  • B29C67/0018 - Turning tubes inside out
  • B29C69/00 - Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00
  • B29C69/001 - a shaping technique combined with cutting
  • B29D22/00 - Producing hollow articles
  • B29C47/0021 - Flat flexible articles
  • B29C47/0026 - Hollow flexible articles
  • B29C47/0038 - Combined shaping operations
  • B29C47/0059 - Extrusion moulding combined with shaping by flattening, folding or bending
  • B29C47/02 - incorporating preformed parts or layers
  • B29K2105/0809 - Fabrics
  • B29L2031/755 - Membranes, diaphragms

• US Classifications

  • 264 - Plastic and nonmetallic article shaping or treating: processes