1815646

Information

• Patent Grant
• 1815646

• References
• Source

• Patent Number

  1,815,646

• Date Filed

  Not available

• Date Issued

  Tuesday, July 21, 1931
  93 years ago

• CPC

  • C01D1/22 - with carbonates or bicarbonates

• US Classifications

  • 162 - Paper making and fiber liberation