| 摘要 |
A stair covering material substantially impervious to liquid running the length of a flight of stairs, with a plurality of individually spaced, step-upon treads at the top side and a plurality of individually spaced non-skid, non-slip surfaces at the under side, and with the covering material having a resistive strength to withstand the weight of a person walking thereon, and a flexibility to fold flat between adjacent ones of the individually spaced step-upon treads.
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