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发明名称
Wooden girder
摘要
申请公布号
US2230628(A)
申请公布日期
1941.02.04
申请号
US19380233848
申请日期
1938.10.07
申请人
CHRISTOPH & UNMACK AKTIENGESELLSCHAFT
发明人
SAHLBERG WILHELM
分类号
E04C3/14
主分类号
E04C3/14
代理机构
代理人
主权项
地址
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