Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4940415 | Key system for vacuum cleaner hose connection | — | 1990-07-10 |
| 4787117 | Vacuum cleaner electrical connector mount | — | 1988-11-29 |
| 4738697 | Vacuum cleaner bag mount and method for mounting a dust bag thereon | — | 1988-04-19 |
| 4733430 | Vacuum cleaner with operating condition indicator system | — | 1988-03-29 |
| 4423534 | Vacuum cleaner handle lock | John B. Lyman | 1984-01-03 |