3421975

Information

• Patent Grant
• 3421975

• References
• Source

• Patent Number

  3,421,975

• Date Filed

  Not available

• Date Issued

  Tuesday, January 14, 1969
  55 years ago

• CPC

  • C04B20/08 - Defibrilating asbestos

• US Classifications

  • 162 - Paper making and fiber liberation