(under the class definition) Apparatus including a buried object recovering device floatingly supported on a vehicle frame and a ground- engaging supporting member operatively connected to said recovering device to continuously shift said recovering device relative to said frame in response to changes in contour of the ground.
SEE OR SEARCH CLASS
172, Earth Working,
387+, and subclasses 669+, and see the subclasses there noted for earth working implements with ground wheels or runners.
