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发明名称
Derrick
摘要
申请公布号
US1908959(A)
申请公布日期
1933.05.16
申请号
US19300489310
申请日期
1930.10.17
申请人
CULLEN-FRIESTEDT COMPANY
发明人
CULLEN EDWARD V.;SCHMIDT ALBERT G. A.
分类号
B66C7/00
主分类号
B66C7/00
代理机构
代理人
主权项
地址
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