Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5035205 | Collapsible disposable cat litter box | Philip Schiller | 1991-07-30 |
| 4587511 | Elevator system with hall lamp status monitoring | Linus R. Dirnberger, Alan L. Husson | 1986-05-06 |
| 4555689 | Elevator system with lamp status and malfunction monitoring | Linus R. Dirnberger | 1985-11-26 |