1540666

Information

• Patent Grant
• 1540666

• References
• Source

• Patent Number

  1,540,666

• Date Filed

  Not available

• Date Issued

  Tuesday, June 2, 1925
  99 years ago

• CPC

  • C09B29/16 - Naphthol-sulfonic acids

• US Classifications

  • 534 - Organic compounds