3462896

Information

• Patent Grant
• 3462896

• References
• Source

• Patent Number

  3,462,896

• Date Filed

  Not available

• Date Issued

  Tuesday, August 26, 1969
  55 years ago

• CPC

  • E02D29/12 - Manhole shafts Other inspection or access chambers Accessories therefor
  • E21D1/08 - while moving the lining downwards

• US Classifications

  • 052 - Static structures
  • 405 - Hydraulic and earth engineering