1660696

Information

• Patent Grant
• 1660696

• References
• Source

• Patent Number

  1,660,696

• Date Filed

  Not available

• Date Issued

  Tuesday, February 28, 1928
  97 years ago

• CPC

  • D21C3/006 - with compounds not otherwise provided for
  • D21C11/0035 - Introduction of compounds

• US Classifications

  • 162 - Paper making and fiber liberation
  • 423 - Chemistry of inorganic compounds