发明名称 |
AUTOMATIC CHESS TIME INDICATOR |
摘要 |
An automatic time indicator for use during a chess match. A control circuit is provided to alternately control the running of respective players' time clocks without any direct manual intervention, relying on circuitry in the chess board itself and the placement of a chess piece on a new square by any player.
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申请公布号 |
US3698180(A) |
申请公布日期 |
1972.10.17 |
申请号 |
USD3698180 |
申请日期 |
1971.08.06 |
申请人 |
EMIL KLEIN;SAMUEL F. KINNROTH |
发明人 |
EMIL KLEIN |
分类号 |
G04F3/00;(IPC1-7):G04F3/00;A63F3/02;A63F9/00 |
主分类号 |
G04F3/00 |
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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