1859848

Information

• Patent Grant
• 1859848

• References
• Source

• Patent Number

  1,859,848

• Date Filed

  Not available

• Date Issued

  Tuesday, May 24, 1932
  92 years ago

• CPC

  • D21C3/022 - in presence of S-containing compounds
  • D21C3/06 - sulfur dioxide sulfurous acid bisulfites sulfites
  • Y10S162/02 - Chip soaking

• US Classifications

  • 162 - Paper making and fiber liberation