1887920

Information

• Patent Grant
• 1887920

• References
• Source

• Patent Number

  1,887,920

• Date Filed

  Not available

• Date Issued

  Tuesday, November 15, 1932
  92 years ago

• CPC

  • C01G30/008 - Sulfides

• US Classifications

  • 423 - Chemistry of inorganic compounds
  • 290 - Prime-mover dynamo plants