Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4644727 | Strand chair for supporting prestressing cable and cross-mesh in elongated precast concrete plank | David W. Hanson, Richard C. Nash, Lonnie G. Fox | 1987-02-24 |
| 4457682 | Machine for casting concrete members | Richard C. Nash, David W. Hanson | 1984-07-03 |
| D272517 | Combination lift insert and weld plate for use in hollow core concrete planks | — | 1984-02-07 |
| 4398761 | Device for lifting and tilting concrete panels | David W. Hanson, Richard C. Nash | 1983-08-16 |
| 4369153 | Machine for casting concrete members | Richard C. Nash, David W. Hanson | 1983-01-18 |