Number | Date | Country | Kind |
---|---|---|---|
4-252576 | Sep 1992 | JPX | |
5-045265 | Mar 1993 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4226121 | Knospler | Oct 1980 | |
4307616 | Vasile | Dec 1981 | |
4841489 | Ozaki et al. | Jun 1989 | |
5005419 | O'Donnell | Apr 1991 | |
5027821 | Hirama et al. | Jul 1991 |
Entry |
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Japanese Patent Publication No.60-51068. |
U.S. Pat. No. 4,140,022. |