Number | Name | Date | Kind |
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D301063 | Risi et al. | May 1989 | |
D313280 | Rodenburgh et al. | Dec 1990 | |
D315026 | Castonguay et al. | Feb 1991 | |
1677829 | Jack | Jul 1928 | |
1746169 | Swanson | Feb 1930 | |
2196552 | Garloff | Apr 1940 | |
2471226 | Maccario | May 1949 | |
2484062 | Abbott | Oct 1949 | |
2550945 | Steinhage et al. | May 1951 | |
3025641 | Ahtiainen | Mar 1962 | |
3354592 | Curci | Nov 1967 | |
4281473 | Emalfarb et al. | Aug 1981 | |
4314431 | Rabassa | Feb 1982 | |
4644685 | Tisbo et al. | Feb 1987 | |
4802320 | Forsberg | Feb 1989 | |
4971475 | Castonguay et al. | Nov 1990 | |
5092076 | Terreta | Mar 1992 | |
5134817 | Richardt | Aug 1992 | |
5139721 | Castonguay et al. | Aug 1992 | |
5261760 | Castonguay et al. | Nov 1993 | |
5442877 | Lindhall | Aug 1995 |