3389521

Information

• Patent Grant
• 3389521

• References
• Source

• Patent Number

  3,389,521

• Date Filed

  Not available

• Date Issued

  Tuesday, June 25, 1968
  56 years ago

• CPC

  • E04B5/21 - Cross-ribbed floors
  • E04B5/38 - with slab-shaped form units acting simultaneously as reinforcement Form slabs with reinforcements extending laterally outside the element

• US Classifications

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