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发明名称
ACOUSTICAL PLASTER
摘要
申请公布号
CA342591(A)
申请公布日期
1934.06.26
申请号
CAD342591
申请日期
申请人
THE CANADIAN GYPSUM COMPANY
发明人
JAMES S. OFFUTT
分类号
主分类号
代理机构
代理人
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