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发明名称
Wheel and method of production
摘要
申请公布号
US1838322(A)
申请公布日期
1931.12.29
申请号
US19280317230
申请日期
1928.11.05
申请人
METROPOLITAN ENGINEERING COMPANY
发明人
JR. THOMAS E. MURRAY,
分类号
B21D53/26
主分类号
B21D53/26
代理机构
代理人
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