| Number | Name | Date | Kind |
|---|---|---|---|
| 1950896 | Luzzi | Mar 1934 | |
| 2733065 | Barkschat | Jan 1956 | |
| 3472508 | Baker et al. | Oct 1969 | |
| 3802700 | Mayo | Apr 1974 | |
| 4263902 | Dieterich | Apr 1981 | |
| 4337939 | Hoyle et al. | Jul 1982 | |
| 4346886 | Cox et al. | Aug 1982 | |
| 4396188 | Dreissigacker et al. | Aug 1983 | |
| 4875674 | Driessigacker et al. | Oct 1989 | |
| 4880224 | Jonas et al. | Nov 1989 | |
| 4884800 | Duke | Dec 1989 | |
| 4997181 | Lo | Mar 1991 | |
| 5072929 | Peterson et al. | Dec 1991 | |
| 5094446 | Wiedner | Mar 1992 | |
| 5110118 | Winey | May 1992 |
| Entry |
|---|
| Concept II Model C Rowing Ergometer Brochure, 1993. |