Number | Date | Country | Kind |
---|---|---|---|
6-057036 | Mar 1994 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4130472 | Kaplan et al. | Dec 1978 | |
5246804 | Furukawa et al. | Sep 1993 |
Number | Date | Country |
---|---|---|
0452027 | Oct 1991 | EPX |
0523245 | Jan 1993 | EPX |
Entry |
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Patent Abstracts of Japan, vol. 17, No. 399 (P-1579) 26 Jul. 1993. |