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发明名称
Protective system
摘要
申请公布号
US2147841(A)
申请公布日期
1939.02.21
申请号
US19360113332
申请日期
1936.11.30
申请人
HUNT LLOYD F
发明人
HUNT LLOYD F.
分类号
H02H7/26
主分类号
H02H7/26
代理机构
代理人
主权项
地址
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