2188989

Information

• Patent Grant
• 2188989

• References
• Source

• Patent Number

  2,188,989

• Date Filed

  Not available

• Date Issued

  Tuesday, February 6, 1940
  84 years ago

• CPC

  • E01H5/073 - by belt or chain conveyors

• US Classifications

  • 037 - Excavating
  • 414 - Material or article handling