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发明名称
Pressure controlling device for use in raising sunken ships by compressed air
摘要
申请公布号
GB538326(A)
申请公布日期
1941.07.29
申请号
GB19400010622
申请日期
1940.06.20
申请人
CORNELIS ZULVER
发明人
分类号
B63C7/12
主分类号
B63C7/12
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代理人
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