Number | Date | Country | Kind |
---|---|---|---|
9218599 | Sep 1992 | GBX |
Number | Name | Date | Kind |
---|---|---|---|
4343891 | Aasen | Aug 1982 | |
4447521 | Tiers et al. | May 1984 | |
4558003 | Sagawa | Dec 1985 | |
4835096 | Lea | May 1989 | |
5260180 | Sahyun et al. | Nov 1993 |
Number | Date | Country |
---|---|---|
2-240648 | Sep 1990 | JPX |
02240648 | Sep 1990 | JPX |
641348 | Aug 1950 | GBX |
Entry |
---|
2244 Research Disclosure (1989) Mar., No. 299, New York, NY US. |