F22D - Preheating, or accumulating preheated, feed-water; Feed-water supply; Controlling water level; Auxiliary devices for promoting water circulation within boilers

More topics under "F22D - Preheating, or accumulating preheated, feed-water; Feed-water supply; Controlling water level; Auxiliary devices for promoting water circulation within boilers" (4,882)
F22D 1 - Feed-water heaters, e.g. preheaters (2,641)
F22D 11 - Feed-water supply not provided for in other main groups (1,262)
F22D 3 - Accumulators for preheated water (59)
F22D 5 - Controlling water feed or water level; Automatic water feeding or water-level regulators (791)
F22D 7 - Auxiliary devices for promoting water circulation (129)

Patents for F22D - Preheating, or accumulating preheated, feed-water; Feed-water supply; Controlling water level; Auxiliary devices for promoting water circulation within boilers (6)
03/1997
03/12/1997	EP0673330B1 An integrated environmental control system for a helicopter
09/1995
09/27/1995	EP0673330A1 An integrated environmental control system for a helicopter.
07/1994
07/12/1994	US5327744 Integrated environmental control system for a helicopter
07/07/1994	WO1994014651A1 An integrated environmental control system for a helicopter
07/07/1994	CA2147833A1 An integrated environmental control system for a helicopter
04/1984
04/10/1984	CA1165195A1 Fluidised bed boilers