1691660

Information

• Patent Grant
• 1691660

• References
• Source

• Patent Number

  1,691,660

• Date Filed

  Not available

• Date Issued

  Tuesday, November 13, 1928
  96 years ago

• CPC

  • C09B7/06 - Indone-thionapthene indigos

• US Classifications

  • 548 - Organic compounds