2880470

Information

• Patent Grant
• 2880470

• References
• Source

• Patent Number

  2,880,470

• Date Filed

  Not available

• Date Issued

  Tuesday, April 7, 1959
  65 years ago

• CPC

  • E04B2/16 - using elements having specially-designed means for stabilising the position
  • E04B2/709 - obturation by means of longitudinal elements with a plane external surface
  • E04B2002/021 - of triangular shape

• US Classifications

  • 052 - Static structures
  • 446 - Amusement devices: toys
  • D21 - Games, toys, and sports goods
  • D25 - Building units and construction elements