| http://www.w3.org/ns/prov#value | - To provide a device which does not use springs or other energy storage devices which could introduce a safety hazard.DRAWING FIGURESFIG. 1 is an isometric view, showing a prior art boat trailer.FIG. 2 is a side elevation view, showing a prior art trailer on a launching ramp.FIG. 3 is an isometric view, showing the same configuration illustrated i
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