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发明名称
THREAD CONTROLLER FOR SEWING MACHINES
摘要
申请公布号
CA302858(A)
申请公布日期
1930.08.05
申请号
CAD302858
申请日期
申请人
THE UNION SPECIAL MACHINE COMPANY
发明人
CHARLES F. RUBEL;FREDERICK F. ZEIER;NORMAN V. CHRISTENSEN
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