1334679

Information

• Patent Grant
• 1334679

• References
• Source

• Patent Number

  1,334,679

• Date Filed

  Not available

• Date Issued

  Tuesday, March 23, 1920
  104 years ago

• CPC

  • D21C3/024 - with NH3 or H2O

• US Classifications

  • 162 - Paper making and fiber liberation