US PATENT SUBCLASS 244 / 172
.~ With propulsion
Current as of: June, 1999
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DEFINITION
Classification: 244/172
(under subclass 158) Apparatus wherein there is provided means to cause motion of the machine or structure to which it is attached.
SEE OR SEARCH THIS CLASS, SUBCLASS:
53, and 62, for engine structure which may have utility in a spacecraft.
SEE OR SEARCH CLASS
60, Power Plants, appropriate subclasses for the combination of a propulsion device of that class and a vehicular device wherein no significant structure of the vehicle is claimed and see the notes and search notes 200.1+ in subclass for further clarification of the line between these classes.
