459940

Information

• Patent Grant
• 459940

• References
• Source

• Patent Number

  459,940

• Date Filed

  Not available

• Date Issued

  Tuesday, September 22, 1891
  133 years ago

• CPC

  • B07B1/18 - Drum screens
  • A01D17/14 - with cylindrical screens

• US Classifications

  • 209 - Classifying, separating, and assorting solids