1820073

Information

• Patent Grant
• 1820073

• References
• Source

• Patent Number

  1,820,073

• Date Filed

  Not available

• Date Issued

  Tuesday, August 25, 1931
  93 years ago

• CPC

  • F28F5/02 - Rotary drums or rollers
  • B29B7/625 - provided with cooling or heating means

• US Classifications

  • 062 - Refrigeration
  • 165 - Heat exchange