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发明名称
CASE HARDENING BY NITRIFICATION
摘要
申请公布号
CA321231(A)
申请公布日期
1932.04.05
申请号
CAD321231
申请日期
申请人
THE ELECTRO METALLURGICAL COMPANY OF CANADA
发明人
JOHN J. EGAN
分类号
主分类号
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