3224156

Information

• Patent Grant
• 3224156

• References
• Source

• Patent Number

  3,224,156

• Date Filed

  Not available

• Date Issued

  Tuesday, December 21, 1965
  59 years ago

• CPC

  • E04C2/426 - with continuous bars that remain unconnected at crossing points of the grid pattern
  • B21D47/04 - composite sheet metal profiles
  • E04C3/07 - at least partly of bent or otherwise deformed strip- or sheet-like material
  • E04C2003/0413 - being built up from several parts
  • E04C2003/043 - the hollow cross-section comprising at least one enclosed cavity
  • E04C2003/0434 - the open cross-section free of enclosed cavities
  • E04C2003/0452 - H- or I-shaped
  • E04C2003/0465 - square- or rectangular-shaped

• US Classifications

  • 052 - Static structures