3741478

Information

• Patent Grant
• 3741478

• References
• Source

• Patent Number

  3,741,478

• Date Filed

  Not available

• Date Issued

  Tuesday, June 26, 1973
  51 years ago

• CPC

  • F28D21/0008 - Air heaters
  • F24D3/125 - Hydraulic pipe connections
  • F24D3/142 - integrated in prefab construction elements

• US Classifications

  • 237 - Heating systems
  • 165 - Heat exchange
  • 392 - Electric resistance heating devices