Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5023396 | Pop-up service fitting | Donald L. Chapman | 1991-06-11 |
| 5010211 | Flushing floor fitting | — | 1991-04-23 |
| 4958047 | Monument fitting | — | 1990-09-18 |
| 4922672 | Snap-on underfloor preset | Donald L. Chapman | 1990-05-08 |