(under the class definition) Structures having a plurality of independent devices for supporting the housing structure, at least one of said devices being inoperative when another is serving as a support.
SEE OR SEARCH CLASS
248, Supports,
558, for a support adapted to be converted from one type of support to another or to support an article in different positions or orientations by rearrangement, substitution, or removal of one or more parts; and subclasses 126, 207, 518,
and 645 for supports having characteristics which adapt them for alternative mounting or for use as supports of different types.
