2251688

Information

• Patent Grant
• 2251688

• References
• Source

• Patent Number

  2,251,688

• Date Filed

  Not available

• Date Issued

  Tuesday, August 5, 1941
  83 years ago

• CPC

  • C07C309/53 - the carbon skeleton containing carbon atoms of quinone rings

• US Classifications

  • 552 - Organic compounds