Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11148492 | Cable lock adjustable vehicle hitch | — | 2021-10-19 |
| 10603968 | Locking adjustable vehicle hitch | Robbie T. Lange | 2020-03-31 |
| 9944474 | Adjustable lateral seals for dock weather barriers | Frank Heim | 2018-04-17 |
| 9914603 | Weather barriers for vehicle loading docks | Frank Heim | 2018-03-13 |
| 9624049 | Puncture resistant seals for loading docks | Frank Heim, Gary Borgerding | 2017-04-18 |
| 9592972 | Sealing members for weather barriers | Charles Digmann, Charles J. Ashelin, Frank Heim, Gary Borgerding | 2017-03-14 |
| 9551181 | Joint seals for flexible wall panels | — | 2017-01-24 |