1857844

Information

• Patent Grant
• 1857844

• References
• Source

• Patent Number

  1,857,844

• Date Filed

  Not available

• Date Issued

  Tuesday, May 10, 1932
  92 years ago

• CPC

  • C01F7/40 - in the presence of aluminium sulfide

• US Classifications

  • 423 - Chemistry of inorganic compounds