Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5956855 | Ladder inclination indicator | Albert J. Foss | 1999-09-28 |
| 5957332 | Automatic dispenser for granular food products | Frederick McKinney | 1999-09-28 |
| 5033896 | Indicating chart pen cartridge with transparent wall | Michael Mathews | 1991-07-23 |
| 4464671 | Universal slip-on mounting for disposable chart pens | — | 1984-08-07 |