1998997

Information

• Patent Grant
• 1998997

• References
• Source

• Patent Number

  1,998,997

• Date Filed

  Not available

• Date Issued

  Tuesday, April 23, 1935
  89 years ago

• CPC

  • C11C1/106 - inert gases or vapors

• US Classifications

  • 554 - Organic compounds
  • 202 - Distillation: apparatus
  • 203 - Distillation: processes, separatory