Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7686390 | Motion simulation chair | — | 2010-03-30 |
| D492367 | Electric scooter | — | 2004-06-29 |
| 5842535 | Electric drive assembly for bicycles | — | 1998-12-01 |
| 5828200 | Motor control system for variable speed induction motors | James R. Ligman, Thomas M. Ligman | 1998-10-27 |
| D302867 | Decorative plasma arc display | Eric D. Plambeck | 1989-08-15 |
| D273902 | Shade holder | — | 1984-05-15 |
| 4448388 | Canopy assembly | Eric D. Plambeck | 1984-05-15 |
| 4426677 | Combined shade and socket holder | — | 1984-01-17 |
| D270943 | Cover plate for ceiling fans | — | 1983-10-11 |
| D270757 | Combined motor housing, control unit and blade holders for a ceiling fan | — | 1983-09-27 |
| D267005 | Heat sink for a fan motor control | — | 1982-11-23 |