Perpetual blind calendars |
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| 申请号 | EP87110761.1 | 申请日 | 1987-07-24 | 公开(公告)号 | EP0264549A3 | 公开(公告)日 | 1989-07-19 |
| 申请人 | Hoyeck, Ralph Haber; | 发明人 | Hoyeck, Ralph Haber; | ||||
| 摘要 | The present invention deals with perpetual wall, desk and pocket calendars and combined calendars using an assembly of weekdays unit and monthly unit or units set in parallel or concentric relation with each other, fastened in between guides on a baseboard, suspended on transparent films in a venetian blind pattern, strapped around transparent concentric drums, packed in a slide rule pattern or as concentric rings/discs rotating around a central pin, with solid or flexible cursors to identify the current day and its date and large displays of the current day and date by means of One Letter Alphabet (OLA) common variable symbols and coloured, luminous or physical display means that could be visually read at large distance and could be read by the blind through touching process. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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