2753220

Information

• Patent Grant
• 2753220

• References
• Source

• Patent Number

  2,753,220

• Date Filed

  Not available

• Date Issued

  Tuesday, July 3, 1956
  68 years ago

• CPC

  • E21D11/105 - Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock
  • Y10S425/121 - Projection

• US Classifications

  • 406 - Conveyors: fluid current
  • 425 - Plastic article or earthenware shaping or treating: apparatus