Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5651070 | Warning device programmable to be sensitive to preselected sound frequencies | — | 1997-07-22 |
| 4828977 | Conveyor line training simulator system and method | — | 1989-05-09 |
| 4492368 | Force applying apparatus | Cornelius DeLeeuw | 1985-01-08 |
| 4392766 | Automatic feeding apparatus | — | 1983-07-12 |