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发明名称
ULTRASONIC DELAY BODY
摘要
申请公布号
US3508174(A)
申请公布日期
1970.04.21
申请号
USD3508174
申请日期
1967.02.23
申请人
U.S. PHILIPS CORP.
发明人
FRANCISCUS THEODORUS BACKERS;FRANCISCUS ARNOLDUS LUDOVICUS SUIJKERBUIJK
分类号
H03H9/36;(IPC1-7):H03H7/30
主分类号
H03H9/36
代理机构
代理人
主权项
地址
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