The ornamental design for a human-powered lawnmower, as shown and described.
FIG. 1 is a perspective view of a human-powered lawnmower showing my new design;
FIG. 2 is a Left-side view thereof; with the top portion of the frame removed for ease of illustration;
FIG. 3 is a Front view thereof;
FIG. 4 is a Right-side view thereof; and,
FIG. 5 is a back view thereof.
The application relates to the design of a human-powered lawnmower, consisting of a frame, two large, bicycle-type wheels, several smaller wheels and a roller bar, with a series of gears and chains connecting the various parts. The unique design and appearance of this device are illustrated in the drawings.
The broken line showing the handle bar structure in FIG. 1 is included for the purpose of illustrating environmental structure and forms no part of the claimed design.