Number | Date | Country | Kind |
---|---|---|---|
4-093179 | Apr 1992 | JPX | |
4-093180 | Apr 1992 | JPX | |
4-223061 | Aug 1992 | JPX | |
5-027022 | Feb 1993 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3109736 | Sprague | Nov 1963 |
Number | Date | Country |
---|---|---|
0382524 | Aug 1990 | EPX |
1377288 | Sep 1964 | FRX |
Entry |
---|
Database WPI, Derwent Publications Ltd., AN-91-357889, JP-A-3 239 703, Oct. 25, 1991. |
Database WPI, Derwent Publications Ltd., AN-84-191403, JP-A-59 107 344, Jun. 21, 1984. |