1649281

Information

• Patent Grant
• 1649281

• References
• Source

• Patent Number

  1,649,281

• Date Filed

  Not available

• Date Issued

  Tuesday, November 15, 1927
  97 years ago

• CPC

  • D21C3/024 - with NH3 or H2O
  • D21C3/02 - with inorganic bases or alkaline reacting compounds

• US Classifications

  • 162 - Paper making and fiber liberation