3426840

Information

• Patent Grant
• 3426840

• References
• Source

• Patent Number

  3,426,840

• Date Filed

  Not available

• Date Issued

  Tuesday, February 11, 1969
  56 years ago

• CPC

  • F28F21/088 - for domestic or space-heating systems
  • F28D1/0375 - the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another
  • F28D1/05358 - Assemblies of conduits connected side by side or with individual headers
  • Y10S165/328 - Air draft passage confined entirely or in part by fin structure

• US Classifications

  • 165 - Heat exchange
  • 236 - Automatic temperature and humidity regulation