| 发明名称 |
Pinball machine having magnetic ball control. |
| 摘要 |
<p>Magnetic control of a ball on a pinball playfield (10) is provided by an electromagnet (48) located on the playfield and a means (18) manually operable by playerfor energizing the electromagnet. The electromagnet (48) when energized attracts and holds stationary a ball.</p> |
| 申请公布号 |
EP0050943(A1) |
申请公布日期 |
1982.05.05 |
| 申请号 |
EP19810304814 |
申请日期 |
1981.10.15 |
| 申请人 |
WILLIAMS ELECTRONICS, INC. |
发明人 |
RITCHIE, STEVEN S. |
| 分类号 |
A63D13/00;A63F7/00;A63F7/26;(IPC1-7):63F7/26;63F7/02 |
主分类号 |
A63D13/00 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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