1821750

Information

• Patent Grant
• 1821750

• References
• Source

• Patent Number

  1,821,750

• Date Filed

  Not available

• Date Issued

  Tuesday, September 1, 1931
  93 years ago

• CPC

  • C10G9/14 - in pipes or coils with or without auxiliary means
  • Y10S159/24 - Critical

• US Classifications

  • 208 - Mineral oils: processes and products
  • 159 - Concentrating evaporators
  • 196 - Mineral oils: apparatus