3802142

Information

• Patent Grant
• 3802142

• References
• Source

• Patent Number

  3,802,142

• Date Filed

  Not available

• Date Issued

  Tuesday, April 9, 1974
  50 years ago

• CPC

  • E04B9/0471 - having a trapezoidal cross section
  • E04B9/245 - by means of screws, bolts or clamping strips held against the underside of the supporting construction

• US Classifications

  • 052 - Static structures
  • D25 - Building units and construction elements