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发明名称
D-C CHOPPER
摘要
申请公布号
CA833723(A)
申请公布日期
1970.02.03
申请号
CAD833723
申请日期
申请人
WILLIAM BROOKS
发明人
WILLIAM BROOKS
分类号
主分类号
代理机构
代理人
主权项
地址
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