Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6359249 | No wat welding system | Ronald C. Brown, Steven D. Tracey | 2002-03-19 |
| 6200470 | Sub-soil domestic wastewater treatment apparatus having multiple aeration chambers | Roland P. Romero | 2001-03-13 |
| 6066824 | Resistance welding system with a self-contained close-loop cooling arrangement | Michael D. Crawford, Milton L. Turner | 2000-05-23 |
| 5762336 | Three dimensional interlocking puzzle | — | 1998-06-09 |
| 5742022 | Industrial workcell system and method | Michael D. Crawford, Milton L. Turner | 1998-04-21 |
| 5061369 | Sub-soil domestic wastewater treatment apparatus having wedge shaped inclined surfaces | Roland P. Romero | 1991-10-29 |
| 4997368 | Oral measuring device | Norman M. Mayer | 1991-03-05 |
| 4768309 | K-Land grinder | — | 1988-09-06 |