2990038

Information

• Patent Grant
• 2990038

• References
• Source

• Patent Number

  2,990,038

• Date Filed

  Not available

• Date Issued

  Tuesday, June 27, 1961
  64 years ago

• CPC

  • E04C3/086 - of the castellated type
  • 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
  • E04C2003/0469 - triangular-shaped
  • E04C2003/0478 - X-shaped
  • Y10T29/49625 - Openwork, e.g., a truss, joist, frame, lattice-type or box beam
  • Y10T29/49634 - Beam or girder
  • Y10T83/0558 - Along zigzag or undulant line or cut

• US Classifications

  • 052 - Static structures
  • 029 - Metal working
  • 083 - Cutting