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经营范围
发明名称
Gravity buoyancy pump
摘要
申请公布号
US2613608(A)
申请公布日期
1952.10.14
申请号
US19490116875
申请日期
1949.09.21
申请人
JON BEAM
发明人
BEAM JON
分类号
F03B17/02;F04B9/10
主分类号
F03B17/02
代理机构
代理人
主权项
地址
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