Light dot matrix game assembly
US4669984A · kind A · utility
18Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 7, 1986 |
| Grant date | Jun 2, 1987 |
| Priority date | — |
| Expiry date | Feb 7, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09B11/04
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An improved toy drawing assembly is provided by a light table assembly, a pair of indexing systems along two perpendicular axes in the table assembly, a pair of selector elements and arm elements for transferring a preselected sequence of two-dimensional coordinates from a code book onto a writing material placed on the light table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.