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发明名称
Helmet with detecting circuit mounted thereon for indicating approach to an energized powerline
摘要
申请公布号
US3309690(A)
申请公布日期
1967.03.14
申请号
US19660551272
申请日期
1966.05.19
申请人
MOFFITT MELVILLE M
发明人
MOFFITT MELVILLE M.
分类号
G08B3/10
主分类号
G08B3/10
代理机构
代理人
主权项
地址
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