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发明名称
Bolster
摘要
申请公布号
US2348694(A)
申请公布日期
1944.05.09
申请号
US19410398031
申请日期
1941.06.14
申请人
AMERICAN STEEL FOUNDRIES
发明人
OELKERS ALFRED H.
分类号
B61F5/04
主分类号
B61F5/04
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