Number | Name | Date | Kind |
---|---|---|---|
3170741 | Richards, Jr. | Feb 1965 | |
3556620 | Gutierrez | Jan 1971 | |
3710900 | Fink | Jan 1973 | |
3861556 | Barecki et al. | Jan 1975 | |
3889817 | Berkman | Jun 1975 | |
3907116 | Wolf et al. | Sep 1975 | |
3938871 | Bartholemew | Feb 1976 | |
4223787 | Lowry et al. | Sep 1980 | |
4293075 | Veralrud | Oct 1981 | |
4577914 | Stravitz | Mar 1986 |
Number | Date | Country |
---|---|---|
0063068 | Apr 1984 | JPX |
Entry |
---|
IBM Literature, (admitted by applicant to be prior art). |