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发明名称
TWO-SPEED MOTOR-BIKE DRIVE
摘要
申请公布号
US3581853(A)
申请公布日期
1971.06.01
申请号
USD3581853
申请日期
1969.04.21
申请人
HOFFCO INC.
发明人
STEPHEN J. HOFF
分类号
B62M9/04;B62M7/00;(IPC1-7):F16H57/10;F16D67/02
主分类号
B62M9/04
代理机构
代理人
主权项
地址
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