2171824

Information

• Patent Grant
• 2171824

• References
• Source

• Patent Number

  2,171,824

• Date Filed

  Not available

• Date Issued

  Tuesday, September 5, 1939
  85 years ago

• CPC

  • C09B31/075 - ortho-Hydroxy carboxylic acid amides
  • C09B31/02 - Disazo dyes
  • C09B31/025 - containing acid groups

• US Classifications

  • 534 - Organic compounds