| Number | Date | Country | Kind |
|---|---|---|---|
| 131.147 | Oct 1993 | ESX |
| Number | Name | Date | Kind |
|---|---|---|---|
| D201801 | Stevenson | Aug 1965 | |
| 2740023 | Kryder | Mar 1956 | |
| 3560690 | Luce et al. | Feb 1971 | |
| 3676630 | Dennison | Jul 1972 | |
| 4758699 | Ciriscioli | Jul 1988 | |
| 5077454 | Lorenzo | Dec 1991 | |
| 5099094 | Torma et al | Mar 1992 |
| Number | Date | Country |
|---|---|---|
| 230975 | Jan 1964 | AUX |
| 294853 | Nov 1967 | AUX |
| 652474 | Dec 1964 | BEX |
| 1204299 | Nov 1965 | DEX |
| 1213512 | Mar 1966 | DEX |
| 3938489 | May 1991 | DEX |
| 185281 | Sep 1922 | GBX |
| Entry |
|---|
| Otto push button switches on p. 170 of Design News Mar. 13, 1989. |