Number | Date | Country | Kind |
---|---|---|---|
62-64580 | Mar 1987 | JPX | |
62-64581 | Mar 1987 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3500240 | Kessler | Mar 1970 | |
3581229 | Martin | May 1971 | |
4417342 | McKee | Nov 1983 | |
4423510 | Pack et al. | Dec 1983 | |
4468778 | Karning et al. | Aug 1984 | |
4703490 | Brumme et al. | Oct 1987 |
Number | Date | Country |
---|---|---|
0152570 | Aug 1985 | EPX |
0178621 | Apr 1986 | EPX |
3403841 | Aug 1985 | DEX |
2144141 | Feb 1973 | FRX |
2035674 | Jun 1980 | GBX |
Entry |
---|
Patent Abstracts of Japan, vol. 6, No. 9 (E-90) [887], 20 Jan. 1982; & JP-A-56 131 985 (Mitsubishi Denki K.K.). |