3495628

Information

• Patent Grant
• 3495628

• References
• Source

• Patent Number

  3,495,628

• Date Filed

  Not available

• Date Issued

  Tuesday, February 17, 1970
  54 years ago

• CPC

  • B21C37/151 - Making tubes with multiple passages
  • B21C23/14 - Making other products
  • B21C23/145 - Interlocking profiles
  • B21C37/124 - the tubes having a special shape
  • B21D11/06 - Bending into helical or spiral form Forming a succession of return bends
  • B29C53/78 - using profiled sheets or strips
  • F16L9/16 - wound from sheets or strips, with or without reinforcement
  • F16L9/18 - Double-walled pipes Multi-channel pipes or pipe assemblies
  • F16L11/16 - wound from profiled strips or bands
  • Y10T428/24661 - Forming, or cooperating to form cells
  • Y10T428/24744 - Longitudinal or transverse tubular cavity or cell

• US Classifications

  • 138 - Pipes and tubular conduits
  • 428 - Stock material or miscellaneous articles