3220921

Information

• Patent Grant
• 3220921

• References
• Source

• Patent Number

  3,220,921

• Date Filed

  Not available

• Date Issued

  Tuesday, November 30, 1965
  59 years ago

• CPC

  • C07C23/46 - with more than three condensed rings

• US Classifications

  • 514 - Drug, bio-affecting and body treating compositions