3543453

Information

• Patent Grant
• 3543453

• References
• Source

• Patent Number

  3,543,453

• Date Filed

  Not available

• Date Issued

  Tuesday, December 1, 1970
  54 years ago

• CPC

  • E03F5/027 - The bottom made of prefabricated segments
  • E02D29/12 - Manhole shafts Other inspection or access chambers Accessories therefor
  • E03F5/02 - Manhole shafts or other inspection chambers snow-filling openings accessories
  • Y10T137/6991 - Ground supporting enclosure

• US Classifications

  • 052 - Static structures
  • 137 - Fluid handling