发明名称 Removable entranceway puzzle gate
摘要 A removable barrier gate to block a driveway or doorway, that has at least two crossmembers that attach to either side of the opening, and a linking member that connects the inner ends of the crossmembers together, forming a continuous barrier across the opening.
申请公布号 US5517787(A) 申请公布日期 1996.05.21
申请号 US19940208434 申请日期 1994.03.09
申请人 MACK, EDWARD 发明人 MACK, EDWARD
分类号 E01F13/02;(IPC1-7):E01F13/00 主分类号 E01F13/02
代理机构 代理人
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