Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4487557 | Magnetically driven centrifugal pump | Robert F. Ruyak, Rocco J. Tomasino | 1984-12-11 |
| 4466276 | Consistometer | Robert F. Ruyak, Stephen G. Ratkowski, Samuel D. Ciprich | 1984-08-21 |
| 4384703 | Handle for magnetically actuated valve | Robert F. Ruyak, Larry R. Rosio, Albert E. Straus | 1983-05-24 |
| 4354294 | Rotary wall deslagger | — | 1982-10-19 |