2212928

Information

• Patent Grant
• 2212928

• References
• Source

• Patent Number

  2,212,928

• Date Filed

  Not available

• Date Issued

  Tuesday, August 27, 1940
  83 years ago

• CPC

  • C09B5/44 - Azines of the anthracene series
  • C09B5/022 - not provided for in one of the sub groups C09B5/04 - C09B5/20
  • C09B5/16 - Benz-diazabenzanthrones

• US Classifications

  • 544 - Organic compounds