Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5407357 | Electronic testing device for use with educational books | — | 1995-04-18 |
| 5122062 | Electronic teaching apparatus | Stanley Cutler | 1992-06-16 |
| D323860 | Educational game board | Stanley Culter | 1992-02-11 |
| D318435 | Ruler | — | 1991-07-23 |
| D306611 | Teaching clock | Brian Hills, Dennis J. Graham | 1990-03-13 |
| 4781598 | Instructional apparatus | — | 1988-11-01 |
| 4664634 | Electric self-teaching apparatus utilizing printed and auditory means | Stanley Cutler | 1987-05-12 |