Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6739092 | Transit vehicle door operator and lock | Steven Heffner | 2004-05-25 |
| 6446389 | Tandem sliding door operator | Steven Heffner | 2002-09-10 |
| 6001005 | Polishing apparatus | Robert Luke Anderson, Janusz Aleksander Derza, John Edward Bussan | 1999-12-14 |
| 5957763 | Polishing apparatus with support columns supporting multiple platform members | Robert Luke Anderson, Janusz Aleksander Derza, John Edward Bussan | 1999-09-28 |