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发明名称
Tell-tale device
摘要
申请公布号
US2080231(A)
申请公布日期
1937.05.11
申请号
US19350043310
申请日期
1935.10.03
申请人
ROCK-OLA MANUFACTURING COMPANY
发明人
ROCKOLA DAVID C.
分类号
A63F7/00
主分类号
A63F7/00
代理机构
代理人
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