3055793

Information

• Patent Grant
• 3055793

• References
• Source

• Patent Number

  3,055,793

• Date Filed

  Not available

• Date Issued

  Tuesday, September 25, 1962
  62 years ago

• CPC

  • D21C3/06 - sulfur dioxide sulfurous acid bisulfites sulfites
  • D21C11/0014 - Combination of various pulping processes with one or several recovery systems (cross-recovery)

• US Classifications

  • 162 - Paper making and fiber liberation