Patent D623374 Issued on September 7, 2010. Estimated Expiration Date: September 7, 2024. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
CLAIM The ornamental design for a shopping cart base, as shown and described.
FIG. 1 is an isometric view of a shopping cart base showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a right side view thereof;
FIG. 5 is a top view thereof;
FIG. 6 is a bottom view thereof; and,
FIG. 7 is a left side thereof.
The dashed lines are for illustrative purposes only and form no part of the claimed design, where the lighter dashed lines designate unclaimed portions of the shopping cart base profile and the dark dashed lines in FIGS. 1, 2, 4, and 7 designate a boundary of the claimed matter.
“Engineering and Processing News,” Modern Plastics, Mar. 1980, pp. 22, 24.
Steve Ham, “Structural Plastics, Fundamentals of Structural Plastics,” Plastics Engineering, Jun. 2001, pp. 46-57.
Cashiers' Pressure Process, “A Revolutionary Development in Structural Foam Molding,” Cashiers Plastic, Oct. 1981.