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发明名称
Bolster
摘要
申请公布号
US2029822(A)
申请公布日期
1936.02.04
申请号
US19310510596
申请日期
1931.01.23
申请人
AMERICAN STEEL FOUNDRIES
发明人
HEDGCOCK WILLIAM C.
分类号
B61F5/04
主分类号
B61F5/04
代理机构
代理人
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地址
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