| Number | Name | Date | Kind |
|---|---|---|---|
| RE30298 | Keller | Jun 1980 | |
| 1985598 | Carver | Dec 1934 | |
| 2330492 | Jansen | Sep 1943 | |
| 2645936 | Albrecht | Jul 1953 | |
| 2920554 | Bunke | Jan 1960 | |
| 3005153 | Berkley et al. | Oct 1961 | |
| 3019019 | Forte | Jan 1962 | |
| 3059476 | Spradlin | Oct 1962 | |
| 3464260 | Heyman | Sep 1969 | |
| 3563542 | Wellmow et al. | Feb 1971 | |
| 3593573 | Ely | Jul 1971 | |
| 3929331 | Beeding | Dec 1975 | |
| 3953026 | Stokely | Apr 1970 | |
| 3982757 | McDonnell | Sep 1976 | |
| 4116050 | Tanahashi et al. | Sep 1978 | |
| 4209167 | Jansen | Jun 1980 | |
| 4246777 | Birner et al. | Jan 1981 | |
| 4323237 | Jungerwirth | Apr 1982 | |
| 4333396 | Longnecker | Jun 1982 | |
| 4343465 | Allen | Aug 1982 | |
| 4345520 | Goldsmith et al. | Aug 1982 |
| Entry |
|---|
| "Rally" Electronic Exercise System with Four Adaptor Grips in Athaletee Journal, vol. 60, No. 9, May 1980. |
| Servo-Controlled Exoskeleton Measures Muscle Forces from Control Engineering, p. 92 from Cornell Aeronautical Lab., Buffalo, N.Y., The Myotron. |