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经营范围
发明名称
Kristallfilter für elektrische Schwingungen.
摘要
申请公布号
CH246821(A)
申请公布日期
1947.01.31
申请号
CHD246821
申请日期
1945.04.18
申请人
"PATELHOLD" PATENTVERWERTUNGS- & ELEKTRO-HOLDING AG.
发明人
AG. "PATELHOLD" PATENTVERWERTUNGS- & ELEKTRO-HOLDING
分类号
H03H9/00;H03H9/58;H03H9/60
主分类号
H03H9/00
代理机构
代理人
主权项
地址
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