447923

Information

• Patent Grant
• 447923

• References
• Source

• Patent Number

  447,923

• Date Filed

  Not available

• Date Issued

  Tuesday, March 10, 1891
  133 years ago

• CPC

  • F28D1/03 - with plate-like or laminated conduits
  • Y10S165/332 - Coaxial ducts define air draft passage and annular passage for heat exchange fluid

• US Classifications

  • 165 - Heat exchange