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发明名称
Ratchet mechanism
摘要
申请公布号
US2281866(A)
申请公布日期
1942.05.05
申请号
US19390303090
申请日期
1939.11.06
申请人
WILLIAMS IVAN A
发明人
WILLIAMS IVAN A.
分类号
B23B51/02
主分类号
B23B51/02
代理机构
代理人
主权项
地址
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