1989684

Information

• Patent Grant
• 1989684

• References
• Source

• Patent Number

  1,989,684

• Date Filed

  Not available

• Date Issued

  Tuesday, February 5, 1935
  90 years ago

• CPC

  • C05C5/005 - Post-treatment

• US Classifications

  • 071 - Chemistry: fertilizers
  • 252 - Compositions