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经营范围
发明名称
ROLL HEADING MACHINE
摘要
申请公布号
CA520943(A)
申请公布日期
1956.01.17
申请号
CAD520943
申请日期
申请人
WILLIAMS AND WILSON LIMITED;E. LONG LIMITED
发明人
DEFOREST C. PATMORE;ARTHUR W. LANCASTER
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