2689247

Information

• Patent Grant
• 2689247

• References
• Source

• Patent Number

  2,689,247

• Date Filed

  Not available

• Date Issued

  Tuesday, September 14, 1954
  70 years ago

• CPC

  • C09B5/34 - Anthraquinone acridones or thioxanthrones

• US Classifications

  • 546 - Organic compounds
  • 552 - Organic compounds