602637

Information

• Patent Grant
• 602637

• References
• Source

• Patent Number

  602,637

• Date Filed

  Not available

• Date Issued

  Tuesday, April 19, 1898
  126 years ago

• CPC

  • C09B31/068 - Naphthols
  • C09B44/02 - containing ammonium groups not directly attached to an azo group

• US Classifications

  • 534 - Organic compounds