3477891

Information

• Patent Grant
• 3477891

• References
• Source

• Patent Number

  3,477,891

• Date Filed

  Not available

• Date Issued

  Tuesday, November 11, 1969
  55 years ago

• CPC

  • B29C53/824 - collapsible
  • B29C53/581 - using sheets or strips consisting principally of plastics material
  • B29C53/586 - having corrugations
  • B29C53/785 - with reinforcements
  • F16L9/16 - wound from sheets or strips, with or without reinforcement
  • B29C47/00 - Extrusion moulding
  • B29C47/0023 - Hollow rigid articles having only one tubular passage
  • B29C47/003 - Articles having cross-sectional irregularities
  • B29C47/0033 - Articles having longitudinal irregularities
  • B29L2023/003 - having irregular or rough surfaces
  • B29L2023/18 - Pleated or corrugated hoses
  • Y10T156/1002 - with permanent bending or reshaping or surface deformation of self sustaining lamina

• US Classifications

  • 156 - Adhesive bonding and miscellaneous chemical manufacture
  • 138 - Pipes and tubular conduits
  • 425 - Plastic article or earthenware shaping or treating: apparatus