Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5944444 | Control system for draining, irrigating and heating an athletic field | Joseph E. Motz, Mark A. Heinlein, James B. Goddard, Carl Tyner, Brian L. Ferry | 1999-08-31 |
| 5183147 | Chemical handling system | David Drake Callahan, Douglas P. Baxter, Stephen M. Murray | 1993-02-02 |