Number | Name | Date | Kind |
---|---|---|---|
3024158 | Grangaard et al. | Mar 1962 | |
3951733 | Phillips | Apr 1976 | |
4220498 | Prough | Sep 1980 | |
4248662 | Wallick | Feb 1981 | |
4259150 | Prough | Mar 1981 | |
4515655 | Schaefer | May 1985 | |
4543155 | Stawicki | Sep 1985 | |
4642690 | Gazdik et al. | Feb 1987 | |
4674888 | Carlson | Jun 1987 |
Number | Date | Country |
---|---|---|
2202188 | Jun 1990 | AUX |
Entry |
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