Number | Date | Country | Kind |
---|---|---|---|
6-090699 | Apr 1994 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
5241995 | Farrell | Sep 1993 | |
5355236 | Mitsui | Oct 1994 |
Number | Date | Country |
---|---|---|
55-135618 | Oct 1980 | JPX |
62-141516 | Jun 1987 | JPX |
2-81022 | Mar 1990 | JPX |
5-203969 | Aug 1993 | JPX |
682740 | Mar 1994 | JPX |
Entry |
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Patents Abstracts of Japan, P-630, Oct. 29, 1987, vol. 11/No. 331, Optrex Corp. |
Patent Abstracts of Japan, P-376, Jul. 27, 1985, vol. 9/No. 182, Suwa Seikosha K.K. |