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发明名称
Pump lock
摘要
申请公布号
US2482502(A)
申请公布日期
1949.09.20
申请号
US19440568688
申请日期
1944.12.18
申请人
ORR ROBERT ST J
发明人
ORR ROBERT ST. J.
分类号
A62C15/00;F04B9/14
主分类号
A62C15/00
代理机构
代理人
主权项
地址
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