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发明名称
An improved railway sleeper
摘要
申请公布号
AU2002950700(D0)
申请公布日期
2002.09.12
申请号
AU20020950700
申请日期
2002.08.09
申请人
BEZZINA, J.
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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