Number | Date | Country | Kind |
---|---|---|---|
63-207164 | Aug 1988 | JPX | |
63-207165 | Aug 1988 | JPX | |
63-207166 | Aug 1988 | JPX | |
63-207168 | Aug 1988 | JPX | |
63-207169 | Aug 1988 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
RE30031 | Snellman | Jun 1979 | |
3910568 | Brown et al. | Oct 1975 | |
4313670 | Caldwell | Feb 1982 | |
4852867 | Johdai et al. | Aug 1989 | |
4886259 | Ishikawa et al. | Dec 1989 | |
4928941 | Uto et al. | May 1990 |
Number | Date | Country |
---|---|---|
3107768 | Feb 1982 | DEX |
Entry |
---|
Official letter European Patent Office dated Feb. 9, 1990. |