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发明名称
Method of and apparatus for preparing compounds
摘要
申请公布号
US1807931(A)
申请公布日期
1931.06.02
申请号
US19280258123
申请日期
1928.02.29
申请人
WESTERN ELECTRIC COMPANY, INC.
发明人
PURDY CHESTER ARTHUR
分类号
H01B3/22
主分类号
H01B3/22
代理机构
代理人
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