661438

Information

• Patent Grant
• 661438

• References
• Source

• Patent Number

  661,438

• Date Filed

  Not available

• Date Issued

  Tuesday, November 6, 1900
  124 years ago

• CPC

  • C09B49/02 - from nitro compounds of the benzene, naphthalene or anthracene series

• US Classifications

  • 568 - Organic compounds