Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6957930 | Apparatus to form columns of granular material | — | 2005-10-25 |
| 6517292 | Apparatus to form columns of granular material | — | 2003-02-11 |
| 5647690 | Low cost installation of columns of material | — | 1997-07-15 |
| 4358222 | Methods for forming supported cavities by surface cooling | — | 1982-11-09 |