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发明名称
ARCH CONSTRUCTION
摘要
申请公布号
CA358640(A)
申请公布日期
1936.06.23
申请号
CAD358640
申请日期
申请人
THE CANADIAN GYPSUM COMPANY LIMITED;THE UNITED STATES GYPSUM COMPANY
发明人
MICHAEL G. VASS
分类号
主分类号
代理机构
代理人
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