(under the class definition) Apparatus in which the buried object-recovering device is related to an automotive chassis in such fashion that it is mounted on a separate frame having ground- engaging support means therefore and adapted to be towed by said automotive chassis, said recovering device being actuated by a power take-off driven from a motor mounted on said chassis.
SEE OR SEARCH CLASS
172, Earth Working,
79, for an earth working tool located on a trailer and driven by a motor on a tractor pulling said trailer.
180, Motor Vehicles,
14.1+, for a vehicle train with a power transmitting connection between a tractor and trailer in addition to the articulated connection.