1721621

Information

• Patent Grant
• 1721621

• References
• Source

• Patent Number

  1,721,621

• Date Filed

  Not available

• Date Issued

  Tuesday, July 23, 1929
  95 years ago

• CPC

  • F28D1/05333 - with multiple rows of conduits or with multi-channel conduits
  • Y10S165/491 - Manifolds formed in core-enclosing frame
  • Y10T29/49373 - Tube joint and tube plate structure
  • Y10T29/49382 - Helically finned

• US Classifications

  • 165 - Heat exchange
  • 029 - Metal working