2177404

Information

• Patent Grant
• 2177404

• References
• Source

• Patent Number

  2,177,404

• Date Filed

  Not available

• Date Issued

  Tuesday, October 24, 1939
  85 years ago

• CPC

  • F26B17/16 - the materials passing down a heated surface
  • F26B2200/14 - Sand

• US Classifications

  • 432 - Heating
  • 034 - Drying and gas or vapor contact with solids