3411721

Information

• Patent Grant
• 3411721

• References
• Source

• Patent Number

  3,411,721

• Date Filed

  Not available

• Date Issued

  Tuesday, November 19, 1968
  56 years ago

• CPC

  • D21D5/026 - with rotating cleaning foils
  • D21D1/36 - with vertical shaft
  • D21D5/06 - Rotary screen-drums

• US Classifications

  • 241 - Solid material comminution or disintegration
  • 162 - Paper making and fiber liberation