Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8894319 | Permeable paving slab and paver and manufacturing method therefor | Dean R. Tonder, Glen Tonder, Tim Donovan | 2014-11-25 |
| 8684626 | Permeable paver and manufacturing method therefor | Dean R. Tonder, Glen Tonder, Tim Donovan | 2014-04-01 |
| 7927037 | Permeable paver and manufacturing method therefor | Glen Tonder, Dean R. Tonder, Tim Donovan | 2011-04-19 |
| 4287688 | Apparatus for grinding plane, annular surfaces, especially on faying rings in gate valves | — | 1981-09-08 |