2144586

Information

• Patent Grant
• 2144586

• References
• Source

• Patent Number

  2,144,586

• Date Filed

  Not available

• Date Issued

  Tuesday, January 17, 1939
  86 years ago

• CPC

  • E21B21/07 - for treating dust-laden gaseous fluids
  • Y10S29/078 - Air blast and/or vacuum conveyor
  • Y10T16/195 - Locked

• US Classifications

  • 175 - Boring or penetrating the earth
  • 016 - Miscellaneous hardware
  • 029 - Metal working