3881235

Information

• Patent Grant
• 3881235

• References
• Source

• Patent Number

  3,881,235

• Date Filed

  Not available

• Date Issued

  Tuesday, May 6, 1975
  49 years ago

• CPC

  • F28F21/063 - for domestic or space-heating systems
  • F24D3/14 - incorporated in a ceiling, wall or floor
  • Y10T29/4935 - Heat exchanger or boiler making

• US Classifications

  • 029 - Metal working
  • 165 - Heat exchange