Number | Date | Country | Kind |
---|---|---|---|
92 13359 | Nov 1992 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
2970669 | Bergson | Jul 1961 | |
3648754 | Sephton | Mar 1972 | |
3938434 | Cox | Feb 1976 | |
4214377 | Maffet | Jul 1980 | |
4678588 | Shortt | Jul 1987 | |
4966703 | Kalinis et al. | Oct 1990 | |
5252229 | Rojey et al. | Oct 1993 |
Entry |
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Patent Abstracts of Japan, vol. 12, No. 297 Mar. 1988. |
Patent Abstracts of Japan, vol. 2, No. 136 Jun. 1978. |