1809224

Information

• Patent Grant
• 1809224

• References
• Source

• Patent Number

  1,809,224

• Date Filed

  Not available

• Date Issued

  Tuesday, June 9, 1931
  93 years ago

• CPC

  • C09B7/08 - Other indole-indigos
  • F16F1/24 - Lubrication Covers

• US Classifications

  • 548 - Organic compounds