1340990

Information

• Patent Grant
• 1340990

• References
• Source

• Patent Number

  1,340,990

• Date Filed

  Not available

• Date Issued

  Tuesday, May 25, 1920
  104 years ago

• CPC

  • C10B39/16 - combined with sorting

• US Classifications

  • 209 - Classifying, separating, and assorting solids