3871146

Information

• Patent Grant
• 3871146

• References
• Source

• Patent Number

  3,871,146

• Date Filed

  Not available

• Date Issued

  Tuesday, March 18, 1975
  49 years ago

• CPC

  • E01D1/00 - Bridges in general
  • E04B1/34815 - Elements not integrated in a skeleton
  • E01D2101/30 - Metal
  • E01D2101/34 - non-ferrous
  • E01D2101/40 - Plastics
  • E04B2001/3583 - using permanent tensioning means

• US Classifications

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