Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5875555 | Crayon sharpener assembly | John J. Andrisin, III, David D. Hayes, G. Stewart Lenox, Robert L. Quinlan | 1999-03-02 |
| 5802948 | Method for sharpening crayons | John J. Andrisin, III, David D. Hayes, G. Stewart Lenox, Robert L. Quinlan | 1998-09-08 |
| 5704549 | Oscillating sprinkler | Richard C. Kephart, Peter C. McEachen | 1998-01-06 |