Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11031613 | Fuel cell power system for an unmanned surface vehicle | Michael A. Carralero | 2021-06-08 |
| 9612006 | Table with integrated lighting | David J. Powell, Dante M. Zeppa, Gary R. Ludwig | 2017-04-04 |
| 6648419 | Shock absorbing seat | Clifton J. Ratza, Trent A. Eekhoff | 2003-11-18 |
| 6644751 | Shock absorbing seat | Clifton J. Ratza, Trent A. Eekhoff | 2003-11-11 |
| 6357830 | Shock absorbing seat | Clifton J. Ratza, Trent A. Eekhoff | 2002-03-19 |
| 6176459 | Self-locking angularly-tilting seat support | Christopher A. Rossman, Warwick M. Whitley, II | 2001-01-23 |
| 6089669 | Folding outdoor seat | Clifton J. Ratza, Jason Begin | 2000-07-18 |
| D420816 | Boat seat | Clifton J. Ratza, Jason Begin | 2000-02-22 |
| D412259 | Fishing seat | Clifton J. Ratza, Jason Begin | 1999-07-27 |
| D346282 | Side chair | Keith A. McDowell, Donald Chadwick, Peter F. Bemis | 1994-04-26 |
| D344649 | Chair spine | Keith A. McDowell, Donald Chadwick, Peter F. Bemis | 1994-03-01 |
| 4987708 | Seismic anchor | — | 1991-01-29 |
| 4773122 | Conductive caster | — | 1988-09-27 |
| 4753409 | Chair support incorporating a height adjustment mechanism | — | 1988-06-28 |
| 4513347 | Static protective chair | James H. Nienhuis | 1985-04-23 |