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发明名称
WALLBOARD MANUFACTURE
摘要
申请公布号
CA430130(A)
申请公布日期
1945.09.18
申请号
CAD430130
申请日期
申请人
CANADIAN GYPSUM COMPANY LIMITED;UNITED STATES GYPSUM COMPANY
发明人
JAMES K. DUNCAN
分类号
主分类号
代理机构
代理人
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