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发明名称
Adjustable needle-lever bearing for sewing machines
摘要
申请公布号
US1763949(A)
申请公布日期
1930.06.17
申请号
US19280254507
申请日期
1928.02.15
申请人
SEXTON MFG. COMPANY
发明人
BOWMAN LOUIS G.
分类号
D05B55/14
主分类号
D05B55/14
代理机构
代理人
主权项
地址
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