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发明名称
Schallwellensende- und -empfangseinrichtung, bei der ein Koerper longitudinale Kontraktions- und Expansionsschwingungen ausfuehrt
摘要
申请公布号
DE656468(C)
申请公布日期
1938.02.10
申请号
DE1932P066316D
申请日期
1932.10.29
申请人
GEORGE WASHINGTON PIERCE
发明人
分类号
G01S1/72
主分类号
G01S1/72
代理机构
代理人
主权项
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