Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6145679 | Shiftable tail-block logging skyline | — | 2000-11-14 |
| 5664418 | Whirl-wind vertical axis wind and water turbine | — | 1997-09-09 |
| 5503530 | Walter's whirl-wind vertical axis wind turbine | — | 1996-04-02 |
| 5103610 | Log building element | — | 1992-04-14 |
| 4936237 | Dual boat hull | — | 1990-06-26 |