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1-77563 | Mar 1989 | JPX |
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4211997 | Rudnick et al. | Jul 1980 | |
4394774 | Widerglen et al. | Jul 1983 | |
4636946 | Hartung et al. | Jan 1987 | |
4829473 | Keller et al. | May 1989 | |
4876597 | Roy et al. | Oct 1989 | |
4974178 | Izeki et al. | Nov 1990 | |
4979050 | Westland et al. | Dec 1990 | |
5057932 | Lang | Oct 1991 | |
5079630 | Golin et al. | Jan 1992 | |
5093750 | Park et al. | Mar 1992 | |
5142677 | Ehlig et al. | Aug 1992 |
Number | Date | Country |
---|---|---|
0051225 | May 1982 | EPX |
0051259 | May 1982 | EPX |
0268270 | May 1988 | EPX |
Entry |
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Patent Abstracts of Japan, vol. 9, No. 22 (p. 406)(2015) 19 Nov. 1985 & JP-A-60 129 987 (Nippon Columbia K.K.) 11 Jul. 1985 *abstract*. |