1256605

Information

• Patent Grant
• 1256605

• References
• Source

• Patent Number

  1,256,605

• Date Filed

  Not available

• Date Issued

  Tuesday, February 19, 1918
  106 years ago

• CPC

  • C01F7/0686 - from sulfate-containing minerals

• US Classifications

  • 423 - Chemistry of inorganic compounds