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经营范围
发明名称
Method and apparatus for feeding and forming sheet strip stock into a helix
摘要
申请公布号
US2752873(A)
申请公布日期
1956.07.03
申请号
US19510225716
申请日期
1951.05.11
申请人
ARMCO STEEL CORPORATION
发明人
FREEZE JONATHAN ROY
分类号
B21C37/12
主分类号
B21C37/12
代理机构
代理人
主权项
地址
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PROCESSO PARA A PREPARACAO DE 2-(2',4'-DIHIDROXIFENIL)-4,6-DIARIL-S-TRAZINAS E COMPOSTOS
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