2119648

Information

• Patent Grant
• 2119648

• References
• Source

• Patent Number

  2,119,648

• Date Filed

  Not available

• Date Issued

  Tuesday, June 7, 1938
  86 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
  • E04F21/10 - centrifugally acting

• US Classifications

  • 164 - Metal founding
  • 198 - Conveyors: power-driven