2112258

Information

• Patent Grant
• 2112258

• References
• Source

• Patent Number

  2,112,258

• Date Filed

  Not available

• Date Issued

  Tuesday, March 29, 1938
  87 years ago

• CPC

  • C09B1/285 - Dyes with no other substituents than the amino groups
  • C09B1/5155 - only amino and hydroxy groups

• US Classifications

  • 552 - Organic compounds