发明名称 Illuminated stepping stones
摘要 An illuminated stepping stone which is light in weight, of sufficient strength to support a human being of extremely heavy weight, is attractive in appearance and can be manufactured inexpensively. Illumination of the stepping stone is by means of a low voltage source of electricity. Multiple stepping stones are to be connected together and illuminated from a source of electricity.
申请公布号 US4992914(A) 申请公布日期 1991.02.12
申请号 US19890415861 申请日期 1989.10.02
申请人 HEISS, CHARLES E.;GLUCK, LAWRENCE S. 发明人 HEISS, CHARLES E.;GLUCK, LAWRENCE S.
分类号 E01C17/00;E01F9/06;F21S8/00;F21S8/02;F21V33/00;F21Y101/00 主分类号 E01C17/00
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