发明名称 Collapsible mat assemblies
摘要 An assembly has a foldable frame member that has a folded and an unfolded orientation, a sheet material covering portions of the frame member when the frame member is in the unfolded orientation, and one or more floatation devices. The floatation devices can be attached to any number of locations, including but not limited to the sheet material, the top of the sheet material, the bottom of the sheet material, and the periphery of the frame member.
申请公布号 US2003232551(A1) 申请公布日期 2003.12.18
申请号 US20020177609 申请日期 2002.06.18
申请人 ZHENG YU 发明人 ZHENG YU
分类号 B63B7/08;(IPC1-7):B63C9/08;B63C9/28 主分类号 B63B7/08
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