Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4419135 | Method of preparing cementitious compositions for tunnel backfill | — | 1983-12-06 |
| 4203837 | Process for removal of discrete particulates and solutes from liquids by foam flotation | John H. Hubbard | 1980-05-20 |