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经营范围
发明名称
Acoustic range finder
摘要
申请公布号
US2418136(A)
申请公布日期
1947.04.01
申请号
US19430509710
申请日期
1943.11.10
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
MUNSON WILDEN A.;STEINBERG JOHN C.
分类号
G01S1/72
主分类号
G01S1/72
代理机构
代理人
主权项
地址
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