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发明名称
Compressional wave directional, prismatic, and focusing system
摘要
申请公布号
US2406391(A)
申请公布日期
1946.08.27
申请号
US19420425710
申请日期
1942.01.06
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
MASON WARREN P.
分类号
G10K11/30
主分类号
G10K11/30
代理机构
代理人
主权项
地址
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