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发明名称
Coin operated device
摘要
申请公布号
US2307140(A)
申请公布日期
1943.01.05
申请号
US19420427529
申请日期
1942.01.21
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
KRUMREICH CHARLES L.
分类号
H04M17/00
主分类号
H04M17/00
代理机构
代理人
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