| Number | Date | Country | Kind |
|---|---|---|---|
| 5-2393 | Jan 1993 | JPX |
| Number | Name | Date | Kind |
|---|---|---|---|
| D292394 | Boucher | Oct 1987 | |
| D305020 | Naoi et al. | Dec 1989 | |
| D325900 | Shimizu et al. | May 1992 | |
| 4510565 | Dummermuth | Apr 1985 | |
| 4638452 | Schultz et al. | Jan 1987 | |
| 4937777 | Flood et al. | Jun 1990 |
| Entry |
|---|
| Logic controller on p. 21 of Control Engineering, Dec. 1989. |
| Texas Instruments programmable controllers on p. 74 of Control Engineering, Jul. 1989. |
| Omron programmable controller on p. 2 of Control Engineering, May 1989. |
| Programmable controller on p. 76 of Control Engineering, Jul. 1989. |