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经营范围
发明名称
POWDER METALLURGY
摘要
申请公布号
CA500920(A)
申请公布日期
1954.03.23
申请号
CAD500920
申请日期
申请人
THE H-P-M DEVELOPMENT CORPORATION
发明人
HARRY A. TOULMIN, JR.
分类号
主分类号
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代理人
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