3555979

Information

• Patent Grant
• 3555979

• References
• Source

• Patent Number

  3,555,979

• Date Filed

  Not available

• Date Issued

  Tuesday, January 19, 1971
  53 years ago

• CPC

  • E02D29/055 - further excavation of the cross-section proceeding underneath an already installed part of the structure
  • E01C3/006 - made of prefabricated single units

• US Classifications

  • 404 - Road structure, process, or apparatus
  • 052 - Static structures
  • 405 - Hydraulic and earth engineering