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摘要
申请公布号
US2362540(A)
申请公布日期
1944.11.14
申请号
US19420440252
申请日期
1942.04.23
申请人
ARMOUR AND COMPANY
发明人
CONQUEST VICTOR;KEIL HAVARD L.
分类号
C14C1/06
主分类号
C14C1/06
代理机构
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