Referenziert von|
| US4257592 | 29. Nov. 1978 | 24. März 1981 | | Exercising apparatus with improvements in handle structure, rope arrangement, and clamping means | | US4345755 | 29. Sept. 1980 | 24. Aug. 1982 | | Exercising device | | US5984836 | 8. Apr. 1998 | 16. Nov. 1999 | | Multi-directional neck exercise device |
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