The ornamental design for connecting piece for a lung for mannequin for cpr training, as shown and described.
FIG. 1 is a top view of a connecting piece for a lung for mannequin for CPR training showing my new design;
FIG. 2 is an enlarged partial perspective view of the connector portion of the connecting piece for a lung for a mannequin for CPR training showing the connector disassembled;
FIG. 3 is an enlarged partial view of the connector portion of the connecting piece for a lung for a mannequin for CPR training showing the connector disassembled; and,
FIG. 4 is another enlarged partial perspective view of the connector portion of the connecting piece for a lung for a mannequin for CPR training showing the connector disassembled.
The broken lines are included for the purpose of illustrating unclaimed portions of the connecting piece of a lung for a mannequin for CPR training and form no part of the claimed design.