|
| US4515012 | 25. Nov. 1983 | 7. Mai 1985 | Borg-Warner Corporation | Valve testing system utilizing an artificial atmosphere |
| US4598579 | 23. Okt. 1984 | 8. Juli 1986 | Cordis Corporation | Portable instrument to test pressure/flow of ventricular shunt valves |
| US4976144 | 10. Apr. 1990 | 11. Dez. 1990 | Fisher Controls International, Inc. | Diagnostic apparatus and method for fluid control valves |
| US5048329 | 27. Aug. 1990 | 17. Sept. 1991 | Commonwealth Edison Company | Hydraulic valve test device |
| US5109692 | 24. Okt. 1990 | 5. Mai 1992 | Fisher Controls International Inc. | Diagnostic apparatus and method for fluid control valves |
| US5197328 | 9. Jan. 1992 | 30. März 1993 | Fisher Controls International, Inc. | Diagnostic apparatus and method for fluid control valves |