1877948

Information

• Patent Grant
• 1877948

• References
• Source

• Patent Number

  1,877,948

• Date Filed

  Not available

• Date Issued

  Tuesday, September 20, 1932
  91 years ago

• CPC

  • C09B5/48 - Bis-anthraquinonediazines (indanthrone)
  • C09B5/58 - by halogenation

• US Classifications

  • 544 - Organic compounds