1554972

Information

• Patent Grant
• 1554972

• References
• Source

• Patent Number

  1,554,972

• Date Filed

  Not available

• Date Issued

  Tuesday, September 22, 1925
  100 years ago

• CPC

  • B22C5/0495 - combined with another operation

• US Classifications

  • 414 - Material or article handling
  • 209 - Classifying, separating, and assorting solids