Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4492219 | Valve and system incorporating same | Marcus F. Schoenheimer, Lionel A. Gaskell | 1985-01-08 |
| 4454890 | Solar heater system and valve | Marcus F. Schoenheimer, Lionel A. Gaskell | 1984-06-19 |