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经营范围
发明名称
Seismic sound source.
摘要
<p>The volumetric capacity of the firing chamber (15) of an air gun is discretely quantized by mounting unit-volume inserts (44) interiorly of the firing chamber (15).</p>
申请公布号
EP0317162(A2)
申请公布日期
1989.05.24
申请号
EP19880310523
申请日期
1988.11.09
申请人
WESTERN ATLAS INTERNATIONAL, INC.
发明人
HAUGLAND, TOR-ARVID
分类号
G01V1/137
主分类号
G01V1/137
代理机构
代理人
主权项
地址
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