发明名称 Portable playground system
摘要 A portable playground system including a cylindrical base member having four openings therethrough disposed at ninety degree intervals therearound intermediate upper and lower ends thereof. The base member has a floor disposed interiorly thereof disposed at lower ends of the four openings. A top member is dimensioned for removable coupling with the upper end of the cylindrical base member. Stairs, ladders and slides are adapted for removably coupling with the four openings.
申请公布号 US5697851(A) 申请公布日期 1997.12.16
申请号 US19960674251 申请日期 1996.07.01
申请人 DELGADO, ALEX 发明人 DELGADO, ALEX
分类号 A63B9/00;A63G21/00;(IPC1-7):A63G21/00 主分类号 A63B9/00
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