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发明名称
Anordnung zur Verminderung oder Aufhebung der Richtwirkung hochfrequenter, insbesondere ultrasonorer Schallerzeuger und Schallempfaenger
摘要
申请公布号
DE531956(C)
申请公布日期
1931.08.19
申请号
DE1929E039337D
申请日期
1929.06.04
申请人
ELECTROACUSTIC G.M.B.H.
发明人
FUCHS WERNER;RUDOLPH DR. DR. WILHELM
分类号
H04B11/00
主分类号
H04B11/00
代理机构
代理人
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地址
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