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摘要
申请公布号
US2045259(A)
申请公布日期
1936.06.23
申请号
US19330667602
申请日期
1933.04.24
申请人
BATCHELL GEORGE W
发明人
BATCHELL GEORGE W.
分类号
C03B25/06
主分类号
C03B25/06
代理机构
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