1856203

Information

• Patent Grant
• 1856203

• References
• Source

• Patent Number

  1,856,203

• Date Filed

  Not available

• Date Issued

  Tuesday, May 3, 1932
  92 years ago

• CPC

  • C09B3/26 - from dibenzanthronyls

• US Classifications

  • 552 - Organic compounds
  • 548 - Organic compounds