Clock teaching aid
US6406301B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Feb 18, 2000 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Feb 18, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09B19/12
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A teaching device adapted to teach the reading of an analogue clock face comprising first and second components one of which is transparent, one of said components being marked to represent a clock face displaying minutes and on which a minute clock had can be manually rotated and the other of said components being marked to represent a clock face displaying hours and on which an hour clock hand can be manually rotated, and means for removably connecting said first and second components together with said minute and hour clock face superimposed one above the other to display a complete analogue clock face showing hours and minutes and having hour and minute hands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.