1981055

Information

• Patent Grant
• 1981055

• References
• Source

• Patent Number

  1,981,055

• Date Filed

  Not available

• Date Issued

  Tuesday, November 20, 1934
  90 years ago

• CPC

  • C09B49/04 - from amino compounds of the benzene, naphthalene or anthracene series

• US Classifications

  • 562 - Organic compounds