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发明名称
Door bottom closing and sealing device
摘要
申请公布号
US2433331(A)
申请公布日期
1947.12.30
申请号
US19430488409
申请日期
1943.05.25
申请人
BECK WILHELM A
发明人
BECK WILHELM A.
分类号
E06B7/20
主分类号
E06B7/20
代理机构
代理人
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