3394517

Information

• Patent Grant
• 3394517

• References
• Source

• Patent Number

  3,394,517

• Date Filed

  Not available

• Date Issued

  Tuesday, July 30, 1968
  56 years ago

• CPC

  • F27D1/04 - characterised by the form
  • E04B2/08 - by interlocking of projections or inserts with indentations
  • E04B2002/0217 - of prismatic shape
  • E04B2002/0219 - of pyramidal shape
  • E04B2002/0221 - of conical shape
  • E04B2002/0223 - of cylindrical shape

• US Classifications

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