1873947

Information

• Patent Grant
• 1873947

• References
• Source

• Patent Number

  1,873,947

• Date Filed

  Not available

• Date Issued

  Tuesday, August 23, 1932
  92 years ago

• CPC

  • C09B49/128 - from hydroxy compounds of the benzene or naphthalene series

• US Classifications

  • 568 - Organic compounds