Number | Date | Country | Kind |
---|---|---|---|
57-133551 | Jul 1982 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3740580 | Spies | Jun 1973 | |
3904888 | Griffin et al. | Oct 1975 | |
4295062 | Mihalich et al. | Oct 1981 | |
4369381 | Okamoto et al. | Jan 1983 | |
4438352 | Mardkha | Mar 1984 | |
4464587 | Suzuki et al. | Aug 1984 |
Number | Date | Country |
---|---|---|
3012618 | Oct 1980 | DEX |
Entry |
---|
Patent Abstracts of Japan, Nov. 27, 1979, vol. 3, No. 143. |