using steam or spring force

Full Title

Arrangement or mounting of power plants in aircraft; Aircraft characterised by the type or position of power plants > Aircraft characterised by the type or position of power plants > using steam or spring force

Classification Context

Section:

PERFORMING OPERATIONS; TRANSPORTING

Class:

AIRCRAFT; AVIATION; COSMONAUTICS

Subclass:

EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT