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发明名称
Piezoelectric crystal convertergenerator
摘要
申请公布号
US1975517(A)
申请公布日期
1934.10.02
申请号
US19310534530
申请日期
1931.05.02
申请人
COMMUNICATION PATENTS, INC.
发明人
NICOLSON ALEXANDER MCLEAN
分类号
H03B5/34
主分类号
H03B5/34
代理机构
代理人
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