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发明名称
Variable speed drive sprocket
摘要
申请公布号
US3285087(A)
申请公布日期
1966.11.15
申请号
US19630297457
申请日期
1963.07.24
申请人
PANOPIX RESEARCH, INC.
发明人
WELLS LEON W.
分类号
G03B1/42
主分类号
G03B1/42
代理机构
代理人
主权项
地址
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