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发明名称
Handset telephone
摘要
申请公布号
US2220279(A)
申请公布日期
1940.11.05
申请号
US19370164752
申请日期
1937.09.20
申请人
LEICH ELECTRIC CO.
发明人
REID ALEXANDER C.
分类号
H04M1/02
主分类号
H04M1/02
代理机构
代理人
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地址
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