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发明名称
Guy shield
摘要
申请公布号
US1901550(A)
申请公布日期
1933.03.14
申请号
US19300427793
申请日期
1930.02.12
申请人
BIERCE FRED N
发明人
BIERCE FRED N.
分类号
E04H12/20;F16G11/00
主分类号
E04H12/20
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