3221455

Information

• Patent Grant
• 3221455

• References
• Source

• Patent Number

  3,221,455

• Date Filed

  Not available

• Date Issued

  Tuesday, December 7, 1965
  59 years ago

• CPC

  • E04B1/04 - the elements consisting of concrete
  • E04B1/6104 - the overlapping ends of the slabs connected together
  • E04C2/32 - formed of corrugated or otherwise indented sheet-like material composed of such layers with or without layers of flat sheet-like material

• US Classifications

  • 052 - Static structures