发明名称 Collapsible bleacher rail
摘要 A collapsible bleacher railing in conjunction and for use with a collapsible bleacher section or sections, which includes normally vertical, upright, support sections having a plurality of telescoping handrail sections therebetween such that as the bleachers are moved to their relative locations, the handrail will extend and collapse therewith and therefore eliminate the requirement for removal from the bleacher sections.
申请公布号 US3995832(A) 申请公布日期 1976.12.07
申请号 US19730404994 申请日期 1973.10.10
申请人 WIESE, HAROLD 发明人 WIESE, HAROLD
分类号 E04H3/12;(IPC1-7):E04H17/14 主分类号 E04H3/12
代理机构 代理人
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