493975

Information

• Patent Grant
• 493975

• References
• Source

• Patent Number

  493,975

• Date Filed

  Not available

• Date Issued

  Tuesday, March 21, 1893
  132 years ago

• CPC

  • C10B31/12 - for liquid materials

• US Classifications

  • 202 - Distillation: apparatus
  • 048 - Gas: heating and illuminating