1909782

Information

• Patent Grant
• 1909782

• References
• Source

• Patent Number

  1,909,782

• Date Filed

  Not available

• Date Issued

  Tuesday, May 16, 1933
  92 years ago

• CPC

  • F28D1/0535 - the conduits having a non-circular cross-section
  • F28D2021/0035 - for domestic or space heating
  • Y10S165/328 - Air draft passage confined entirely or in part by fin structure

• US Classifications

  • 165 - Heat exchange