Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8789661 | Visual warning barrier for door assembly used in a vertical lifting system | — | 2014-07-29 |
| 8328003 | Shopping cart conveyor with gate assembly | Mark R. Webster, Patrick J. Kelnhofer | 2012-12-11 |
| 8075237 | Multi-level vehicle lift | Mark R. Webster | 2011-12-13 |
| 7779992 | Shopping cart conveyor system with pivoting lug | Mark R. Webster, Patrick J. Kelnhofer | 2010-08-24 |
| 6394260 | Conveyor system including roller-guided carriage assemblies | Robert H. Pfleger | 2002-05-28 |
| 6360848 | Safety system for a vertical reciprocating conveyor | — | 2002-03-26 |
| 5941347 | Portable lift | Robert H. Pfleger | 1999-08-24 |
| 5908088 | Hydraulic drive mechanism for a vertical conveyor | Mark R. Webster, August R. Bergemann | 1999-06-01 |
| 5601157 | Decklock | — | 1997-02-11 |
| 5228537 | Safety mechanism for a vertical reciprocating conveyor | Robert H. Pfleger | 1993-07-20 |