3891498

Information

• Patent Grant
• 3891498

• References
• Source

• Patent Number

  3,891,498

• Date Filed

  Not available

• Date Issued

  Tuesday, June 24, 1975
  49 years ago

• CPC

  • D21H13/42 - Asbestos
  • C04B28/02 - containing hydraulic cements other than calcium sulfates
  • D21H5/183 - of asbestos fibres

• US Classifications

  • 162 - Paper making and fiber liberation