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经营范围
发明名称
ROT PROTECTING COVERING FOR POSTS OR SLEEPERS
摘要
申请公布号
CA374330(A)
申请公布日期
1938.06.07
申请号
CAD374330
申请日期
申请人
ERNST WORTMANN
发明人
ERNST WORTMANN
分类号
主分类号
代理机构
代理人
主权项
地址
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