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发明名称
HEAD SEAL FOR AN ANTI-DUST HELMET
摘要
申请公布号
CA42493(S)
申请公布日期
1977.08.01
申请号
CANDAT0042493F
申请日期
申请人
RACAL SAFETY LIMITED
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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