Number | Date | Country | Kind |
---|---|---|---|
3-294552 | Nov 1991 | JPX | |
3-300048 | Nov 1991 | JPX |
Number | Name | Date | Kind |
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4992347 | Hawkins et al. | Feb 1991 | |
5045420 | Hosono et al. | Sep 1991 | |
5166041 | Murofushi et al. | Nov 1992 |
Number | Date | Country |
---|---|---|
0468465A1 | Jan 1992 | EPX |
2202497 | Aug 1972 | DEX |
3007296 | Sep 1981 | DEX |
3919312A1 | Dec 1989 | DEX |
127711 | Nov 1978 | JPX |
Entry |
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Patent Abstracts of Japan, vol. 11, No. 261 (P-609)(2708) 25 Aug. 1987 & JP-A-62 067 560 (RICOH) 27 Mar. 1987 *abstract*. |