387057

Information

• Patent Grant
• 387057

• References
• Source

• Patent Number

  387,057

• Date Filed

  Not available

• Date Issued

  Tuesday, July 31, 1888
  136 years ago

• CPC

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

• US Classifications

  • 209 - Classifying, separating, and assorting solids