Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6186074 | Drive assembly for model train | Robert Grubba, Caleb K. Sullivan, Jeffery A. Price | 2001-02-13 |
| 5513395 | Toilet with magnetic check valve | James K. Miller | 1996-05-07 |
| 5363510 | Pressure relief vent for a waste holding tank | — | 1994-11-15 |
| 5318275 | Portable waste holding tank with improved inlet valve assembly | Charles L. Sargent, John A. Hoffman, John M. Antos | 1994-06-07 |