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发明名称
Screw-down indicating apparatus
摘要
申请公布号
US2036571(A)
申请公布日期
1936.04.07
申请号
US19330692213
申请日期
1933.10.04
申请人
UNITED ENGINEERING & FOUNDRY COMPANY
发明人
ELLIS ROBERT H.;FRY HOWARD N.
分类号
B21B38/10
主分类号
B21B38/10
代理机构
代理人
主权项
地址
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