2789937

Information

• Patent Grant
• 2789937

• References
• Source

• Patent Number

  2,789,937

• Date Filed

  Not available

• Date Issued

  Tuesday, April 23, 1957
  68 years ago

• CPC

  • C07D311/48 - with two such benzopyran radicals linked together by a carbon chain

• US Classifications

  • 514 - Drug, bio-affecting and body treating compositions
  • 549 - Organic compounds