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发明名称
DOOR CHECKING APPARATUS
摘要
申请公布号
CA694960(A)
申请公布日期
1964.09.29
申请号
CAD694960
申请日期
申请人
JOHN N. MORRIS;RUTH M. WILLIAMS
发明人
JOHN N. MORRIS;RUTH M. WILLIAMS
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主分类号
代理机构
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