1991688

Information

• Patent Grant
• 1991688

• References
• Source

• Patent Number

  1,991,688

• Date Filed

  Not available

• Date Issued

  Tuesday, February 19, 1935
  90 years ago

• CPC

  • C07C63/46 - containing two carboxyl groups both bound to carbon atoms of the condensed ring system
  • C07C2103/24 - (Hydrogenated) anthracenes

• US Classifications

  • 562 - Organic compounds