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发明名称
PREVENCAO DE ACIDENTE DO TRABALHO,EM AUDIO
摘要
申请公布号
BR5600452(U)
申请公布日期
1977.10.25
申请号
BR19760000452U
申请日期
1976.04.20
申请人
SARMENTO J
发明人
SARMENTO J
分类号
G11B5/00;(IPC1-7):G11B5/00
主分类号
G11B5/00
代理机构
代理人
主权项
地址
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