Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12356902 | Sod handling apparatus | Ralph Ratsep, Robert Milwain, Mathias Marie Gerardus Hendriks | 2025-07-15 |
| 12329073 | Sod harvesting systems with slab length adjustability | Ian Morgan | 2025-06-17 |
| 12022776 | Sod handling apparatus | Ralph Ratsep, Robert Milwain, Mathias Marie Gerardus Hendriks | 2024-07-02 |
| 10743479 | Sod handling apparatus | Ralph Ratsep, Robert Milwain, Mathias Marie Gerardus Hendriks | 2020-08-18 |
| 9198338 | Sod harvesting apparatus and system for disposing of a defective sod roll | Robert Milwain | 2015-12-01 |
| 8676451 | Method and apparatus for in situ treatment of grass | Ralph Ratsep | 2014-03-18 |
| 8505643 | Method and apparatus for harvesting and picking up sod | Robert Milwain | 2013-08-13 |
| 8479835 | Method and apparatus for harvesting and picking up sod | Robert Milwain | 2013-07-09 |
| 8336638 | Method and apparatus for harvesting and picking up sod | Robert Milwain | 2012-12-25 |
| 8235131 | Method and apparatus for harvesting and picking up sod | Robert Milwain | 2012-08-07 |
| 7721814 | Method and apparatus for harvesting and picking up sod | Robert Milwain | 2010-05-25 |
| 7407362 | Method and apparatus for lifting sod from the top | Robert Milwain | 2008-08-05 |
| 6834729 | Sod roll pre-starter | Robert Milwain | 2004-12-28 |
| 6779610 | Defective sod rejector and deflector | Robert Milwain | 2004-08-24 |
| 5879124 | Vehicle with retractible rear wheel assembly | Dan Dvorak | 1999-03-09 |
| 5860244 | Sod handling system | Gabriel Casimaty, Ian Fraser | 1999-01-19 |
| 5788452 | Forklift vehicle | Don Milwain, Ralph Ratsep | 1998-08-04 |
| 5590488 | Sod handling | Gabriel Casimaty, Ian Fraser | 1997-01-07 |
| 4944352 | Sod harvester for rolling sod with grass side out | Henry Zwambag | 1990-07-31 |
| 4903778 | Method for rolling sod with grass side out | Henry Zwambag | 1990-02-27 |
| 4890801 | Cutoff mechanism for a sod laying machine | Henry Zwambag | 1990-01-02 |
| 4878542 | Sod laying method | Henry Zwambag | 1989-11-07 |
| 4832130 | Sod harvester with conveyor structure | Henry Zwambag | 1989-05-23 |
| 4754815 | Sod laying machine | Henry Zwambag | 1988-07-05 |
| 4621696 | Pivot mechanism for sod cutting machine | — | 1986-11-11 |