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发明名称
ADJUSTABLE RESISTANCE DEVICE
摘要
申请公布号
CA588413(A)
申请公布日期
1959.12.08
申请号
CAD588413
申请日期
申请人
B AND H INSTRUMENT COMPANY
发明人
ROBERT A. WILLIAMS
分类号
主分类号
代理机构
代理人
主权项
地址
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