1990896

Information

• Patent Grant
• 1990896

• References
• Source

• Patent Number

  1,990,896

• Date Filed

  Not available

• Date Issued

  Tuesday, February 12, 1935
  90 years ago

• CPC

  • C01D5/08 - with each other or with ammonium sulfate

• US Classifications

  • 423 - Chemistry of inorganic compounds
  • 023 - Chemistry: physical processes