1355980

Information

• Patent Grant
• 1355980

• References
• Source

• Patent Number

  1,355,980

• Date Filed

  Not available

• Date Issued

  Tuesday, October 19, 1920
  105 years ago

• CPC

  • F28F1/025 - with variable shape.
  • F28D7/06 - the conduits having a single U-bend
  • Y10S165/411 - Connecting to shell by specific structure
  • Y10T29/49373 - Tube joint and tube plate structure

• US Classifications

  • 165 - Heat exchange
  • 029 - Metal working