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发明名称
Pinball runway and scoring feature
摘要
申请公布号
US4861037(A)
申请公布日期
1989.08.29
申请号
US19880239306
申请日期
1988.09.01
申请人
WILLIAMS ELECTRONICS GAMES, INC.
发明人
OURSLER, BARRY
分类号
A63D13/00;A63F7/02
主分类号
A63D13/00
代理机构
代理人
主权项
地址
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