2571993

Information

• Patent Grant
• 2571993

• References
• Source

• Patent Number

  2,571,993

• Date Filed

  Not available

• Date Issued

  Tuesday, October 23, 1951
  73 years ago

• CPC

  • D21C3/16 - nitrogen oxides nitric acid nitrates, nitrites
  • D21C3/26 - Multistage processes

• US Classifications

  • 162 - Paper making and fiber liberation