Number | Name | Date | Kind |
---|---|---|---|
3493630 | Salensky | Feb 1970 | |
3738862 | Klarquist et al. | Jun 1973 | |
3931109 | Martin | Jan 1976 | |
4186036 | Elms et al. | Jan 1980 | |
4322456 | Martin | Mar 1982 | |
4440914 | Helfand et al. | Apr 1984 | |
4549000 | Widmer et al. | Oct 1985 | |
4604317 | Berman et al. | Aug 1986 |
Number | Date | Country |
---|---|---|
0019322 | Feb 1983 | JPX |
1148226 | Jan 1986 | JPX |
1148228 | Jan 1986 | JPX |
1246228 | Nov 1986 | JPX |
Entry |
---|
Agreement dated 7-2-86 with IBM. |