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发明名称
PROCESSO PARA TRANSMISSAO ACUSTICA DE DADOS;E APARELHO PARA USO NA EXECUCAO DO PROCESSO
摘要
申请公布号
BR7708730(A)
申请公布日期
1979.07.24
申请号
BR19770008730
申请日期
1977.12.29
申请人
SPERRY SUN INC
发明人
CHANEY P;COX W
分类号
G08C19/12;E21B47/16;G08C23/00;(IPC1-7):G01V1/22
主分类号
G08C19/12
代理机构
代理人
主权项
地址
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