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发明名称
Apparatus for electriclaly transforming materials
摘要
申请公布号
US2468174(A)
申请公布日期
1949.04.26
申请号
US19430485924
申请日期
1943.05.06
申请人
KOPPERS COMPANY, INC.
发明人
COTTON WILLIAM J.
分类号
H01J37/32
主分类号
H01J37/32
代理机构
代理人
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地址
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