2819270

Information

• Patent Grant
• 2819270

• References
• Source

• Patent Number

  2,819,270

• Date Filed

  Not available

• Date Issued

  Tuesday, January 7, 1958
  67 years ago

• CPC

  • C09B5/2436 - only nitrogen-containing hetero rings

• US Classifications

  • 546 - Organic compounds
  • 552 - Organic compounds