3251613

Information

• Patent Grant
• 3251613

• References
• Source

• Patent Number

  3,251,613

• Date Filed

  Not available

• Date Issued

  Tuesday, May 17, 1966
  58 years ago

• CPC

  • F24F13/0209 - characterised by their connecting mens
  • F16L9/003 - with a rectangular cross-section
  • F16L37/0985 - the flexible hook extending radially inwardly from an outer part and engaging a bead, recess or the like on an inner part
  • F24F13/0218 - Flexible soft ducts
  • F24F13/0263 - Insulation for air ducts
  • Y10S220/23 - Fiberglass
  • Y10S220/902 - Foam

• US Classifications

  • 285 - Pipe joints or couplings
  • 220 - Receptacles