1801945

Information

• Patent Grant
• 1801945

• References
• Source

• Patent Number

  1,801,945

• Date Filed

  Not available

• Date Issued

  Tuesday, April 21, 1931
  93 years ago

• CPC

  • C01B17/26 - with carbon
  • Y10S423/03 - Papermaking liquor

• US Classifications

  • 423 - Chemistry of inorganic compounds