| Number | Date | Country | Kind |
|---|---|---|---|
| 86 2930 | Jun 1986 | FRX |
| Number | Name | Date | Kind |
|---|---|---|---|
| D281315 | Kueld | Nov 1985 | |
| D284076 | Moeller | Jun 1986 | |
| D287360 | Lehmann | Dec 1986 | |
| 4557225 | Sagues et al. | Oct 1985 | |
| 4620263 | Ito | Oct 1986 | |
| 4769557 | Houf et al. | Sep 1988 |
| Number | Date | Country |
|---|---|---|
| 2808997 | Sep 1979 | DEX |
| Entry |
|---|
| Variable Speed Controls on p. 252 of Design News, 10-7-85. |
| Motion Controllers on p. 92 of Design News, 8-3-87. |