Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5941030 | Step support brace for a swimming pool | — | 1999-08-24 |
| 5887295 | Fiber optics coupler for a swimming pool coping | — | 1999-03-30 |
| 5725043 | Low pressure casting process and apparatus | Richard L. Schaefer, Carl W. D. Schaefer, Norman L. Miller | 1998-03-10 |
| 5590681 | Valve assembly | Richard L. Schaefer, Carl W. D. Schaefer, Norman L. Miller | 1997-01-07 |