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经营范围
发明名称
LINE HYDROPHONE
摘要
申请公布号
US3489994(A)
申请公布日期
1970.01.13
申请号
USD3489994
申请日期
1967.10.03
申请人
DYNAMICS CORP. OF AMERICA
发明人
FRANK MASSA
分类号
G01V1/20;(IPC1-7):H04B13/00
主分类号
G01V1/20
代理机构
代理人
主权项
地址
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