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发明名称
PREPASSIVATION-COLOR METHOD FOR DETECTING CRACKS IN METAL BODIES
摘要
申请公布号
US3625776(A)
申请公布日期
1971.12.07
申请号
USD3625776
申请日期
1969.12.31
申请人
GENERAL ELECTRIC CO.
发明人
MICHAEL F. HENRY
分类号
G01N21/91;(IPC1-7):C23F5/02;G01N31/00
主分类号
G01N21/91
代理机构
代理人
主权项
地址
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