3771277

Information

• Patent Grant
• 3771277

• References
• Source

• Patent Number

  3,771,277

• Date Filed

  Not available

• Date Issued

  Tuesday, November 13, 1973
  51 years ago

• CPC

  • F16B5/0044 - and using interlocking keys of circular, square, rectangular or like shape
  • E04B1/6179 - with protrusions and recesses on each frontal surface
  • E04B2001/0069 - Prismatic shaped buildings with substantially triangular vertical cross-section

• US Classifications

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