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发明名称
Apparatus for making helical conveyor blades by edgewise bending and squeezing rolls
摘要
申请公布号
US2815790(A)
申请公布日期
1957.12.10
申请号
US19550512970
申请日期
1955.06.03
申请人
MAYRATH THOMAS L
发明人
MAYRATH THOMAS L.
分类号
B21D11/06
主分类号
B21D11/06
代理机构
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