1802715

Information

• Patent Grant
• 1802715

• References
• Source

• Patent Number

  1,802,715

• Date Filed

  Not available

• Date Issued

  Tuesday, April 28, 1931
  93 years ago

• CPC

  • D21C3/024 - with NH3 or H2O

• US Classifications

  • 162 - Paper making and fiber liberation
  • 530 - Chemistry: natural resins or derivatives
  • 549 - Organic compounds