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经营范围
发明名称
ACOUSTIC TRANSDUCERS
摘要
申请公布号
US3421139(A)
申请公布日期
1969.01.07
申请号
USD3421139
申请日期
1966.08.23
申请人
SANGAMO ELECTRIC CO.
发明人
JACK ALAN SIEBERT
分类号
B06B1/06;(IPC1-7):H04B13/00
主分类号
B06B1/06
代理机构
代理人
主权项
地址
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HYDROPHOBIC EMULSION
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METHOD OF RADON ENRICHMENT IN SAMPLES FOR MEASUREMENT OF VERY SMALL CONCENTRATIONS OF THIS GAS
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High speed platen-type die cutter
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SEMI-SUBMERSIBLE VESSELS
DIRECT IGNITION GAS BURNER CONTROL SYSTEM
