Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7935192 | Drain cleaning apparatus with restricted reverse function | David Silverman, Anton D. Pfeiffer | 2011-05-03 |
| 5102195 | Seating system | Peter Axelson, Michael Heinrich, Ann Lasko-Harvill | 1992-04-07 |
| 5074507 | Locking mechanism | Peter Axelson, Michael Heinrich, Ann Lasko-Harvill | 1991-12-24 |
| 5060393 | Apparatus for taking body measurements | Michael Heinrich, C. Kerry Jones | 1991-10-29 |
| 5052647 | Quick release coupler | Peter Axelson, Michael Heinrich, Ann Lasko-Harvill | 1991-10-01 |
| 5035467 | Seating system | Peter Axelson, Michael Heinrich, Ann Lasko-Harvill | 1991-07-30 |
| 4998354 | Mechanical shape sensor | Michael Heinrich, Clifford E. Brubaker, Colin A. McLaurin | 1991-03-12 |
| 4951336 | Contoured support cushions | — | 1990-08-28 |
| 4763951 | Threaded locking coupler | — | 1988-08-16 |
| 4615856 | Method for forming an individually contoured corrective seat for a wheelchair | — | 1986-10-07 |