Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5325646 | Tank cover structure | Jeffrey A. Hallsten | 1994-07-05 |
| D345222 | Extruded metal plank for an interlocking field-erectable deck or cover structure | Jeffrey A. Hallsten | 1994-03-15 |