1489225

Information

• Patent Grant
• 1489225

• References
• Source

• Patent Number

  1,489,225

• Date Filed

  Not available

• Date Issued

  Tuesday, April 1, 1924
  100 years ago

• CPC

  • C09B49/124 - from polycarbocyclic compounds

• US Classifications

  • 544 - Organic compounds
  • 008 - Bleaching and dyeing