Number | Name | Date | Kind |
---|---|---|---|
4218724 | Kaufman | Aug 1980 | |
4337374 | Smith | Jun 1982 | |
4449015 | Hotchkiss et al. | May 1984 | |
4649230 | Nielsen | Mar 1987 | |
4775122 | McClymont | Oct 1988 |
Number | Date | Country |
---|---|---|
2201306 | Aug 1988 | GBX |
Entry |
---|
Klippon box on p. 101 of Electrical Review, vol. 216, No. 10, 3-22-85, upper right photo. |