2143394

Information

• Patent Grant
• 2143394

• References
• Source

• Patent Number

  2,143,394

• Date Filed

  Not available

• Date Issued

  Tuesday, January 10, 1939
  86 years ago

• CPC

  • C09B49/10 - from diphenylamines, indamines, or indophenols

• US Classifications

  • 564 - Organic compounds