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发明名称
COMBINED SOIL WASTE AND VENT UNIT
摘要
申请公布号
CA392073(A)
申请公布日期
1940.10.22
申请号
CAD392073
申请日期
申请人
JOHN B. PIERCE FOUNDATION
发明人
WILLIAM C. GROENIGER
分类号
主分类号
代理机构
代理人
主权项
地址
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