3391422

Information

• Patent Grant
• 3391422

• References
• Source

• Patent Number

  3,391,422

• Date Filed

  Not available

• Date Issued

  Tuesday, July 9, 1968
  56 years ago

• CPC

  • B29D23/001 - Pipes; Pipe joints
  • B29C53/24 - of plates or sheets
  • B29C53/26 - parallel with direction of feed
  • B29C53/32 - Coiling
  • B29C53/586 - having corrugations
  • B29C53/602 - for tubular articles having closed or nearly closed ends
  • B29C53/78 - using profiled sheets or strips
  • B29C53/8066 - Impregnating
  • B29C70/521 - and impregnating the reinforcement before the die
  • B29C70/527 - Pulling means
  • B29D23/00 - Producing tubular articles
  • B29K2105/06 - containing reinforcements, fillers or inserts
  • B29L2031/712 - Containers; Packaging elements or accessories, Packages

• US Classifications

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