1973636

Information

• Patent Grant
• 1973636

• References
• Source

• Patent Number

  1,973,636

• Date Filed

  Not available

• Date Issued

  Tuesday, September 11, 1934
  90 years ago

• CPC

  • C09B33/048 - the coupling component being a bis-naphthol

• US Classifications

  • 534 - Organic compounds