2820790

Information

• Patent Grant
• 2820790

• References
• Source

• Patent Number

  2,820,790

• Date Filed

  Not available

• Date Issued

  Tuesday, January 21, 1958
  67 years ago

• CPC

  • C09B5/008 - only N-containing hetero rings

• US Classifications

  • 546 - Organic compounds
  • 548 - Organic compounds
  • 552 - Organic compounds