3840933

Information

• Patent Grant
• 3840933

• References
• Source

• Patent Number

  3,840,933

• Date Filed

  Not available

• Date Issued

  Tuesday, October 15, 1974
  50 years ago

• CPC

  • D21G3/02 - for calenders
  • D21G3/005 - Doctor knifes

• US Classifications

  • 015 - Brushing, scrubbing, and general cleaning
  • 162 - Paper making and fiber liberation