1983888

Information

• Patent Grant
• 1983888

• References
• Source

• Patent Number

  1,983,888

• Date Filed

  Not available

• Date Issued

  Tuesday, December 11, 1934
  90 years ago

• CPC

  • C09B7/06 - Indone-thionapthene indigos

• US Classifications

  • 548 - Organic compounds