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发明名称
Thermo-magnetically operated device
摘要
申请公布号
US1839165(A)
申请公布日期
1931.12.29
申请号
US19280273134
申请日期
1928.04.26
申请人
AUTOMATIC TELEPHONE MANUFACTURING COMPANY LIMITED
发明人
ROSEBY PHILIP NORTON
分类号
A63J5/02
主分类号
A63J5/02
代理机构
代理人
主权项
地址
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