3315425

Information

• Patent Grant
• 3315425

• References
• Source

• Patent Number

  3,315,425

• Date Filed

  Not available

• Date Issued

  Tuesday, April 25, 1967
  57 years ago

• CPC

  • E04C3/10 - prestressed
  • E01D2/02 - of the I-girder type
  • E04B1/06 - the elements being prestressed
  • E04B1/34 - Extraordinary structures
  • E01D2101/32 - prestressed
  • E04C2003/0413 - being built up from several parts
  • E04C2003/043 - the hollow cross-section comprising at least one enclosed cavity
  • E04C2003/0447 - circular- or oval-shaped

• US Classifications

  • 052 - Static structures
  • 267 - Spring devices