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发明名称
JOINTER GUARD
摘要
申请公布号
CA636753(A)
申请公布日期
1962.02.20
申请号
CAD636753
申请日期
申请人
ELMER J. C. ENGEL
发明人
ELMER J. C. ENGEL
分类号
主分类号
代理机构
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