Number | Date | Country | Kind |
---|---|---|---|
2-307310 | Nov 1990 | JPX | |
3-107881 | May 1991 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3619656 | Domke | Feb 1971 | |
3731182 | Hirono et al. | May 1973 | |
3906167 | Baker | Sep 1975 | |
4041255 | Cambridge et al. | Aug 1977 | |
4069446 | Yonehara | Jan 1978 | |
4170740 | Pernyeszi | Oct 1979 | |
4350949 | Fujita | Sep 1982 | |
4429186 | Gartner | Jan 1984 |
Entry |
---|
ISPSD 1988, pp. 117-120; J. C. Gammel and M. A. Banak. |
AT & T Bell Laboratories, Pa., 1988. |