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发明名称
SPIRAL STAIRS
摘要
申请公布号
PL179233(B1)
申请公布日期
2000.08.31
申请号
PL19950321598
申请日期
1995.04.15
申请人
WACHENFELD WALTER
发明人
WACHENFELD WALTER
分类号
E04F11/032;(IPC1-7):E04F11/032
主分类号
E04F11/032
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