1980649

Information

• Patent Grant
• 1980649

• References
• Source

• Patent Number

  1,980,649

• Date Filed

  Not available

• Date Issued

  Tuesday, November 13, 1934
  90 years ago

• CPC

  • C10G21/00 - Refining of hydrocarbon oils in the absence of hydrogen, by extraction with selective solvents
  • C10G73/10 - Hydrocarbons

• US Classifications

  • 208 - Mineral oils: processes and products