2139643

Information

• Patent Grant
• 2139643

• References
• Source

• Patent Number

  2,139,643

• Date Filed

  Not available

• Date Issued

  Tuesday, December 6, 1938
  86 years ago

• CPC

  • F24C1/04 - simultaneously
  • F24B5/087 - Regulable circulation
  • Y10T137/7032 - Furniture and housing furnishings
  • Y10T137/86831 - Selective opening of plural ports
  • Y10T137/87096 - Valves with separate, correlated, actuators
  • Y10T137/87153 - Plural noncommunicating flow paths

• US Classifications

  • 126 - Stoves and furnaces
  • 137 - Fluid handling
  • 251 - Valves and valve actuation