2879648

Information

• Patent Grant
• 2879648

• References
• Source

• Patent Number

  2,879,648

• Date Filed

  Not available

• Date Issued

  Tuesday, March 31, 1959
  65 years ago

• CPC

  • E21D5/12 - Accessories for making shaft linings
  • E02D29/12 - Manhole shafts Other inspection or access chambers Accessories therefor
  • E03B3/10 - by means of pit wells

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 166 - Wells