3712187

Information

• Patent Grant
• 3712187

• References
• Source

• Patent Number

  3,712,187

• Date Filed

  Not available

• Date Issued

  Tuesday, January 23, 1973
  52 years ago

• CPC

  • H02G9/06 - in underground tubes or conduits Tubes or conduits therefor
  • E01C5/105 - on prefabricated supporting structures or prefabricated foundation elements, except coverings made of layers of similar elements
  • E01C11/223 - Kerb-and-gutter structures; Kerbs with drainage openings channel or conduits

• US Classifications

  • 404 - Road structure, process, or apparatus