2202040

Information

• Patent Grant
• 2202040

• References
• Source

• Patent Number

  2,202,040

• Date Filed

  Not available

• Date Issued

  Tuesday, May 28, 1940
  84 years ago

• CPC

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

• US Classifications

  • 564 - Organic compounds