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发明名称
Photoelectric cell control for bowling alleys
摘要
申请公布号
US2613933(A)
申请公布日期
1952.10.14
申请号
US19500150362
申请日期
1950.03.18
申请人
JOHNS HENRY S;JOHNS WILLIAM H
发明人
JOHNS HENRY S.;JOHNS WILLIAM H.
分类号
A63D5/04
主分类号
A63D5/04
代理机构
代理人
主权项
地址
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