Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5495636 | Vacuum cleaner with independently operating on/off switches on the handle and the motor housing | Bert P. Bultena | 1996-03-05 |
| 5363534 | Vacuum cleaner and suction tube for use with a vacuum cleaner | Ate K. Damstra | 1994-11-15 |
| 5355548 | Apparatus comprising an electric motor with variable motor power | — | 1994-10-18 |
| 4959556 | Circuit arrangement for deriving a direct voltage from the mains alternating voltage | Ate K. Damstra | 1990-09-25 |
| 4914327 | Circuit arrangement for controlling the alternating current through a load | — | 1990-04-03 |