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发明名称
Dynamic control by intertube coupling devices
摘要
申请公布号
US1998620(A)
申请公布日期
1935.04.23
申请号
US19330656813
申请日期
1933.02.15
申请人
HAMMOND HOLDING CORPORATION
发明人
JR. JOHN HAYS HAMMOND,
分类号
H03G7/02
主分类号
H03G7/02
代理机构
代理人
主权项
地址
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