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发明名称
MATERIAL METERING DEVICE
摘要
申请公布号
CA408743(A)
申请公布日期
1942.11.17
申请号
CAD408743
申请日期
申请人
DONALD STUART KENNEDY
发明人
JOHN ERNEST NEWMAN
分类号
主分类号
代理机构
代理人
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地址
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