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| US4372427 | 19. Sept. 1980 | 8. Febr. 1983 | VALEO | Industrial emergency brake |
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| US5797472 | 26. Jan. 1996 | 25. Aug. 1998 | Otis Elevator Company | Reactive governor |
| US6354406 | 19. Juni 2000 | 12. März 2002 | Siemens Aktiengesellschaft | Safety arrangement for a cable-supported component of a medical device |
