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发明名称
Montage récepteur pour télégraphie à courant alternatif
摘要
申请公布号
FR880256(A)
申请公布日期
1943.03.22
申请号
FRD880256
申请日期
1942.03.17
申请人
FIDES GESELLSCHAFT FU:R DIE VERWALTUNG UND VERWERTUNG VON GEWERBLICHEN SCHUTZRECHTEN MIT BESCHRANKTER HAFTUNG
发明人
分类号
H04L25/22
主分类号
H04L25/22
代理机构
代理人
主权项
地址
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