Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5844488 | Bed sensor and alarm | — | 1998-12-01 |
| 4565910 | Switch apparatus responsive to distortion | Robert D. Blaker, David Blaker | 1986-01-21 |
| 4484043 | Switch apparatus responsive to pressure or distortion | Robert D. Blaker, David Blaker | 1984-11-20 |