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发明名称
Checkerwork construction
摘要
申请公布号
US2303559(A)
申请公布日期
1942.12.01
申请号
US19410423000
申请日期
1941.12.15
申请人
H. A. BRASSERT & COMPANY
发明人
KINNEY SELWYNE P.
分类号
F28D17/02
主分类号
F28D17/02
代理机构
代理人
主权项
地址
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