Issued Patents 1994
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5312012 | Vapor space water hammer eliminator system for liquid transport apparatuses | — | 1994-05-17 |
| 5303843 | Fluid transport apparatus with water hammer eliminator system | Donald G. Zink, John E. Schwartz | 1994-04-19 |
| 5285998 | Internal valve for pressure fluid containment vessels | Donald G. Zink | 1994-02-15 |
| 5280874 | Internal valve | Donald G. Zink, John E. Schwartz | 1994-01-25 |