Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D331600 | Notebook binder | Judith A. Moncrieff Baldwin | 1992-12-08 |
| 4930925 | Loose-leaf notebook construction | Judith A. M. Baldwin | 1990-06-05 |
| 4824237 | Vision and hand/eye coordination exercising and testing machine | Harvey Ratner, Ronald Ratner, Glenn A. Seifert, Marvin Zaro | 1989-04-25 |
| 4677010 | Nautical high visibility device | — | 1987-06-30 |
| 4451158 | Countdown timer | William P. Ketcham | 1984-05-29 |
| 4302439 | Method of disclosing dental plaque with D and C Red 33 | — | 1981-11-24 |