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发明名称
Применение способа многочастотной телефонной связи для передачи сейсмических колебаний от сейсмографов к сейсмостанции
摘要
申请公布号
SU81598(A1)
申请公布日期
1949.11.30
申请号
SU19490396977
申请日期
1949.05.11
申请人
DROZDOV A.A.
发明人
DROZDOV A.A.
分类号
G01V1/22
主分类号
G01V1/22
代理机构
代理人
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地址
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