3199221

Information

• Patent Grant
• 3199221

• References
• Source

• Patent Number

  3,199,221

• Date Filed

  Not available

• Date Issued

  Tuesday, August 10, 1965
  59 years ago

• CPC

  • F25B21/02 - using Peltier effect using Nernst-Ettinghausen effect
  • A23B4/037 - Freeze-drying
  • A23L3/44 - Freeze-drying
  • F26B5/06 - the process involving freezing

• US Classifications

  • 034 - Drying and gas or vapor contact with solids
  • 219 - Electric heating