Invention Application
US20160222595A1 PAVING STONES 有权
铺石

PAVING STONES
Abstract:
Generally L-shaped, square, rectangular, triangular, hexagonal, parallelogram and other-shaped paving stones with inter-fitting vertical spacers forming serpentine side contact surfaces that provide enhanced stone-to-stone interlocking in both water-permeable and water-impermeable paving installations.
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