2180299

Information

• Patent Grant
• 2180299

• References
• Source

• Patent Number

  2,180,299

• Date Filed

  Not available

• Date Issued

  Tuesday, November 14, 1939
  85 years ago

• CPC

  • C09B3/22 - Dibenzanthrones Isodibenzanthrones

• US Classifications

  • 552 - Organic compounds