Number | Name | Date | Kind |
---|---|---|---|
1715021 | Wolf | May 1929 | |
2835378 | Sramek | May 1958 | |
3086649 | Johnson | Apr 1963 | |
3181695 | Taterka et al. | May 1965 | |
3273302 | Walter | Sep 1966 | |
3401609 | Nelson | Sep 1968 | |
3585776 | Euwe | Jun 1971 | |
3696580 | Saltzer, Sr. | Oct 1972 | |
3716962 | Langen et al. | Feb 1973 | |
3828659 | Reichert | Aug 1979 | |
3887126 | Wilson | Jun 1975 | |
3943681 | Preisig | Mar 1976 | |
4042168 | Kasel et al. | Aug 1977 | |
4133430 | Cravens | Jan 1979 | |
4494362 | Koch | Jan 1985 |
Entry |
---|
Research Disclosure No. 20103 by R. E. Grady et al. (Jan. 1981). |