1790817

Information

• Patent Grant
• 1790817

• References
• Source

• Patent Number

  1,790,817

• Date Filed

  Not available

• Date Issued

  Tuesday, February 3, 1931
  94 years ago

• CPC

  • F28F9/0135 - formed by grids having only one tube per closed grid opening
  • F28F9/0132 - formed by slats, tie-rods, articulated or expandable rods
  • Y10S165/423 - Bar

• US Classifications

  • 165 - Heat exchange