Educational and amusement devices
Abstract
Abstract DETERMINED THEREBY. THE DEVICE MAY BE PROVIDED WITH A SHIELD COVERING THE CODE MEANS BUT MOVABLE TO EXPOSE THEM. AN EDUCATIONAL AND AMUSEMENT DEVICE IS DISCLOSED THAT HAS A BOARD ADAPTED FOR USE WITH WORK SHEETS HAVING ON THEIR FRONT FACES A SERIES OF INDICIA, THE BOARD HAVING OPENINGS EXPOSING THE INDICIA. A SECOND SERIES OF INDICIA IS PROVIDED BY A GROUP OF MEMBERS ON THE FRONT FACE OF WHICH INDICIA IS PRINTED AND THE BOARD HAS MEANS ENABLING ANY MEMBER TO BE ASSOCIATED WITH THE INDICIA EXPOSED IN ANY OF THE OPENINGS. BOTH THE BACK FACE OF THE WORK SHEET AND THE BACK OF THE MEMBER HAVE CODE MEANS EXPOSED AT THE BACK OF THE BOARD ENABLING THE CORRECTNESS OF THE RELATIONSHIP OF THE MEMBERS TO THE EXPOSED INDICIA TO BE
Inventors
- 👤 C Tilley
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |