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发明名称
Sign
摘要
申请公布号
US1913505(A)
申请公布日期
1933.06.13
申请号
US19290375196
申请日期
1929.07.01
申请人
NAXON CORPORATION
发明人
NACHUMSOHN IRVING
分类号
H05B41/44
主分类号
H05B41/44
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