Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7118631 | Method for separating substances from particulate solids | Russell Graham | 2006-10-10 |
| 6904919 | Apparatus and method for separating substances from particulate solids | Russell Graham | 2005-06-14 |
| 6709509 | Portland cement manufacture from slag from the production of magnesium metal | — | 2004-03-23 |
| 6010279 | Retaining wall construction | — | 2000-01-04 |
| 4454986 | Railroad spike | — | 1984-06-19 |
| 4245451 | Automatic method and apparatus for laying block units | — | 1981-01-20 |
| 4221505 | Sub-surface irrigation channel | — | 1980-09-09 |