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经营范围
发明名称
Protective device
摘要
申请公布号
US2247592(A)
申请公布日期
1941.07.01
申请号
US19390255381
申请日期
1939.02.09
申请人
SWIFT GEORGE L
发明人
SWIFT GEORGE L.
分类号
E05B1/00
主分类号
E05B1/00
代理机构
代理人
主权项
地址
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