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发明名称
Screw driver
摘要
申请公布号
US2351705(A)
申请公布日期
1944.06.20
申请号
US19420468338
申请日期
1942.12.09
申请人
GUSTAV PRALL
发明人
PRALL GUSTAV
分类号
B25G1/04
主分类号
B25G1/04
代理机构
代理人
主权项
地址
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