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发明名称
Doorcheck
摘要
申请公布号
US1916571(A)
申请公布日期
1933.07.04
申请号
US19320590884
申请日期
1932.02.04
申请人
THE SHELBY METAL PRODUCTS COMPANY
发明人
HOFFMAN LAURENCE N.
分类号
E05F3/02
主分类号
E05F3/02
代理机构
代理人
主权项
地址
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