2139445

Information

• Patent Grant
• 2139445

• References
• Source

• Patent Number

  2,139,445

• Date Filed

  Not available

• Date Issued

  Tuesday, December 6, 1938
  86 years ago

• CPC

  • F26B17/288 - the materials being dried on perforated drums or rollers

• US Classifications

  • 034 - Drying and gas or vapor contact with solids
  • 210 - Liquid purification or separation