Number | Date | Country | Kind |
---|---|---|---|
3-289195 | Oct 1991 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3983272 | Huber et al. | Sep 1976 | |
4530874 | Hendrix et al. | Jul 1985 |
Number | Date | Country |
---|---|---|
0431881 | Jun 1991 | EPX |
0508372 | Oct 1992 | EPX |
Entry |
---|
WPIL, Derwent Pub. Ltd., AN=91-364514 & JP-A-3 243 442. |
WPIL, Derwent Pub. Ltd., AN=90-372957 & JP-A-2 270 654. |