3741857

Information

• Patent Grant
• 3741857

• References
• Source

• Patent Number

  3,741,857

• Date Filed

  Not available

• Date Issued

  Tuesday, June 26, 1973
  51 years ago

• CPC

  • E04C2/543 - Hollow multi-walled panels with integrated webs
  • B29C65/203 - being several single mirrors
  • B29C66/1122 - Single lap to lap joints
  • B29C66/43 - Joining a relatively small portion of the surface of said articles
  • B29C66/438 - Joining sheets for making hollow-walled, channelled structures or multi-tubular articles
  • B29C66/54 - Joining several hollow-preforms
  • B29C66/83413 - cooperating rollers, cylinders or drums
  • E04C2/32 - formed of corrugated or otherwise indented sheet-like material composed of such layers with or without layers of flat sheet-like material
  • E04C2/34 - composed of two or more spaced sheet-like parts
  • B29C47/00 - Extrusion moulding
  • B29C47/0019 - Flat rigid articles
  • B29C47/0021 - Flat flexible articles
  • B29C47/0028 - Multi-passage hollow articles
  • B29C47/02 - incorporating preformed parts or layers
  • B29C66/5412 - said substantially flat extra element being flexible
  • B29L2007/001 - having irregular or rough surfaces
  • B29L2007/002 - Panels; Plates; Sheets
  • B29L2022/005 - having dividing walls
  • B29L2024/006 - multi-channelled
  • B29L2031/10 - Building elements
  • Y10T156/1016 - Transverse corrugating
  • Y10T156/1025 - to form undulated to corrugated sheet and securing to base with parts of shaped areas out of contact
  • Y10T428/24661 - Forming, or cooperating to form cells
  • Y10T428/24744 - Longitudinal or transverse tubular cavity or cell

• US Classifications

  • 428 - Stock material or miscellaneous articles
  • 156 - Adhesive bonding and miscellaneous chemical manufacture
  • 264 - Plastic and nonmetallic article shaping or treating: processes
  • 482 - Exercise devices