(under subclass 819) Device in which the length of the elongated means may be changed either so that it may be made to penetrate the snow or ice more readily or so that it is more accommodating to the height of the user.
SEE OR SEARCH THIS CLASS, SUBCLASS:
809, for ski poles which may be collapsed to a nonuseable condition but which is not adjustable in length when in the useable condition.
SEE OR SEARCH CLASS
403, Joints and Connections, appropriate subclass for an elongated member having means whereby its length may be adjusted.