| http://www.w3.org/ns/prov#value | - A life saving device consisting of an impervious-bag, having, an open mouth and provided with; a relatively stiffened elastic banded portion concentric Y with said mouth,,. said, bag including said banded, portion being adapted tobe' folded into a constrained pack, said b'and'edportion being adapted to effect opening of the .bag automatically upon; manually effected relaxation of the constraint, t
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