3441472

Information

• Patent Grant
• 3441472

• References
• Source

• Patent Number

  3,441,472

• Date Filed

  Not available

• Date Issued

  Tuesday, April 29, 1969
  55 years ago

• CPC

  • D21H5/12 - characterised by the use of special fibrous materials
  • D21H13/40 - vitreous
  • D21H13/42 - Asbestos

• US Classifications

  • 162 - Paper making and fiber liberation