1928725

Information

• Patent Grant
• 1928725

• References
• Source

• Patent Number

  1,928,725

• Date Filed

  Not available

• Date Issued

  Tuesday, October 3, 1933
  91 years ago

• CPC

  • C09B1/523 - N-substituted amino and hydroxy anthraquinone
  • C09B1/52 - sulfonated

• US Classifications

  • 552 - Organic compounds