Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9523457 | Apparatus and method for heat curing of pipe liners | Gerald Scott D'Hulster | 2016-12-20 |
| 9074719 | Apparatus and method for heat curing of pipe liners | Gerald Scott D'Hulster | 2015-07-07 |
| 8807172 | Method and device for repairing piping | Gerald Scott D'Hulster | 2014-08-19 |
| 5676514 | Trolley car for material handling train | Gordon L. Higman, John Arndt Strand, III, Chris D. Erickson | 1997-10-14 |
| 5662045 | Locomotive for material handling train | Charles E. Miller, John Arndt Strand, III | 1997-09-02 |
| 4305195 | Apparatus for disassembling and assembling skate wheels | — | 1981-12-15 |