1801678

Information

• Patent Grant
• 1801678

• References
• Source

• Patent Number

  1,801,678

• Date Filed

  Not available

• Date Issued

  Tuesday, April 21, 1931
  94 years ago

• CPC

  • C09B5/345 - Compounds containing thioxanthrone and carbazole rings

• US Classifications

  • 548 - Organic compounds