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发明名称
ASBESTOS-CEMENT PIPE MAKING APPARATUS
摘要
申请公布号
CA415508(A)
申请公布日期
1943.09.28
申请号
CAD415508
申请日期
申请人
THE RUBEROID CO.
发明人
ARTHUR B. CHRISTOPHER
分类号
主分类号
代理机构
代理人
主权项
地址
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