| 摘要 |
<p>PCT No. PCT/EP86/00289 Sec. 371 Date Mar. 16, 1987 Sec. 102(e) Date Mar. 16, 1987 PCT Filed May 15, 1986 PCT Pub. No. WO86/06778 PCT Pub. Date Nov. 20, 1986.The covering (20) for repairing worn-out steps has two unitary flanges (21, 22, 25, 29) linked together, and is made of step and scuff resistant plastic. At least the capping (21) comprises at its underside facing the step (10) an insert of press board, which has less specific weight as the plastic (23) of the covering (FIG. 1).</p> |
