Number | Date | Country | Kind |
---|---|---|---|
55-90117 | Jun 1980 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3360736 | Nagata | Dec 1967 | |
3403270 | Pace et al. | Sep 1968 | |
3445924 | Cheroff et al. | May 1969 | |
3470390 | Lin | Sep 1969 | |
3636385 | Koepp | Jan 1972 | |
3777216 | Armstrong | Dec 1973 | |
3917964 | Carlson | Nov 1975 | |
4204131 | Dozier | May 1980 | |
4288829 | Tango | Sep 1981 |
Number | Date | Country |
---|---|---|
54-35756 | Nov 1979 | JPX |
Entry |
---|
Patents Abstracts of Japan, vol. 4, No. 112, Aug. 12, 1980, p. 93E21 & Japanese Pat. -A-55 70071, (Mitsubishi Denki K. K.). |
Patents Abstracts of Japan, vol. 4, No. 5, Jan. 16, 1980, p. 133E165 & Japanese Pat. -A-54 146975, (Nippon Denki K. K.). |