Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D383193 | Wave sprinkler | Thomas R. Kruer, Ronald G. Hayes | 1997-09-02 |
| 5645218 | Unitized sprinkler assembly with adjustable water control mechanism | Jerry R. Hayes, Thomas R. Kruer | 1997-07-08 |