2163950

Information

• Patent Grant
• 2163950

• References
• Source

• Patent Number

  2,163,950

• Date Filed

  Not available

• Date Issued

  Tuesday, June 27, 1939
  84 years ago

• CPC

  • C09B5/028 - only N-containing hetero rings

• US Classifications

  • 544 - Organic compounds
  • 546 - Organic compounds