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发明名称
Floor mounted flush folding device
摘要
A device, which may be placed in a floor such that the floor remains flush in the situation where the device is raised above the level of the floor or where the device is folded into the floor, is described herein.
申请公布号
US6591554(B2)
申请公布日期
2003.07.15
申请号
US20010879619
申请日期
2001.06.13
申请人
KUMER, JR. JOHN M.
发明人
KUMER, JR. JOHN M.
分类号
B60N2/30;(IPC1-7):B60N3/04;E04H3/11
主分类号
B60N2/30
代理机构
代理人
主权项
地址
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