1807320

Information

• Patent Grant
• 1807320

• References
• Source

• Patent Number

  1,807,320

• Date Filed

  Not available

• Date Issued

  Tuesday, May 26, 1931
  93 years ago

• CPC

  • D21C3/08 - calcium bisulfite

• US Classifications

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