3387421

Information

• Patent Grant
• 3387421

• References
• Source

• Patent Number

  3,387,421

• Date Filed

  Not available

• Date Issued

  Tuesday, June 11, 1968
  56 years ago

• CPC

  • E04C1/40 - built-up from parts of different materials
  • E04B2/34 - by filling material with or without reinforcements in small channels in, or in grooves between, the elements

• US Classifications

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