3693307

Information

• Patent Grant
• 3693307

• References
• Source

• Patent Number

  3,693,307

• Date Filed

  Not available

• Date Issued

  Tuesday, September 26, 1972
  52 years ago

• CPC

  • E04B2/18 - by interlocking of projections or inserts with indentations
  • E04B2/46 - by interlocking of projections or inserts with indentations
  • E04B2/52 - the walls being characterised by fillings in some of the cavities forming load-bearing pillars or beams
  • E04B2002/0245 - Pegs or pins
  • Y10S52/02 - Masonry lattice or openwork

• US Classifications

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