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发明名称
Kuulosuojaimen sangan kääntölaite.
摘要
申请公布号
FI46022(C)
申请公布日期
1972.12.11
申请号
FI19710002253
申请日期
1971.08.12
申请人
EXEL OY,
发明人
AHO,YRJOE
分类号
A61F11/14;(IPC1-7):A61F11/00;A30D29/00
主分类号
A61F11/14
代理机构
代理人
主权项
地址
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