1842649

Information

• Patent Grant
• 1842649

• References
• Source

• Patent Number

  1,842,649

• Date Filed

  Not available

• Date Issued

  Tuesday, January 26, 1932
  93 years ago

• CPC

  • D21C3/266 - the same pulping agent being used in all stages
  • Y10S162/05 - Alpha cellulose

• US Classifications

  • 162 - Paper making and fiber liberation
  • 536 - Organic compounds