1321515

Information

• Patent Grant
• 1321515

• References
• Source

• Patent Number

  1,321,515

• Date Filed

  Not available

• Date Issued

  Tuesday, November 11, 1919
  105 years ago

• CPC

  • F28D1/0341 - with U-flow or serpentine-flow inside the conduits
  • F28F3/04 - the means being integral with the element
  • Y10S165/386 - To form only air passages

• US Classifications

  • 165 - Heat exchange
  • 123 - Internal-combustion engines