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发明名称
Heating element structure and process of making the same
摘要
申请公布号
US1890780(A)
申请公布日期
1932.12.13
申请号
US19290388440
申请日期
1929.08.26
申请人
PERCY GRAY
发明人
GRAY PERCY
分类号
H05B3/00
主分类号
H05B3/00
代理机构
代理人
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