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发明名称
Gear crowning
摘要
申请公布号
US2325836(A)
申请公布日期
1943.08.03
申请号
US19410391997
申请日期
1941.05.05
申请人
DRUMMOND ROBERT S
发明人
DRUMMOND ROBERT S.
分类号
B23F1/02;B23F19/00
主分类号
B23F1/02
代理机构
代理人
主权项
地址
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